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CH 2: Quadratic functions
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CH 2: Quadratic functions

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Questions and Answers

What are the two types of asymptotes described in the text?

  • Vertical and horizontal (correct)
  • Diagonal and parabolic
  • Exponential and logarithmic
  • Tangent and secant
  • How do the positions of the asymptotes affect the domain and range of the function?

  • They exclude values leading to undefined states (correct)
  • They determine the maximum and minimum values of the function
  • They determine the function's orientation
  • They have no effect on the domain and range
  • What is the role of the coefficient $a$ in determining the orientation of the function's graph?

  • It determines the horizontal shift of the graph
  • It determines the vertical shift of the graph
  • It determines the sign of the function's branches (correct)
  • It has no effect on the orientation of the graph
  • Which step in constructing the graph of a function involves determining the intercepts?

    <p>Deriving the intercepts by setting opposite variables to zero</p> Signup and view all the answers

    How do transformations such as translations, dilations, and reflections affect the base graph of a function?

    <p>They modify the shape and position of the base graph</p> Signup and view all the answers

    What is the purpose of equating different functions and solving for the variable when finding intersection points?

    <p>To find the points where the functions intersect</p> Signup and view all the answers

    How does reflecting a function across an axis or the line $y = x$ affect its equation and graph?

    <p>It alters the equation and impacts properties like symmetry and orientation</p> Signup and view all the answers

    What is the purpose of the structured approach described in the text for understanding and applying quadratic and hyperbolic functions?

    <p>To provide a comprehensive understanding of the functions</p> Signup and view all the answers

    Which of the following is NOT one of the key attributes of the functions described in the text?

    <p>Derivatives</p> Signup and view all the answers

    What is the standard form of a quadratic function?

    <p>y = ax^2 + bx + c</p> Signup and view all the answers

    What does the parameter 'a' represent in a quadratic function?

    <p>The direction and width of the parabola's opening</p> Signup and view all the answers

    The axis of symmetry of a quadratic function is given by:

    <p>x = -b/2a</p> Signup and view all the answers

    To find the vertex of a quadratic function in vertex form, what values are needed?

    <p>The values of h and k</p> Signup and view all the answers

    What is the general form of a hyperbolic function?

    <p>y = a/(x - h) + k</p> Signup and view all the answers

    To graph a quadratic function, what is the first step?

    <p>Identify the vertex using the formula or completion of squares</p> Signup and view all the answers

    What is the domain of a quadratic function?

    <p>All real numbers</p> Signup and view all the answers

    How are the x-intercepts of a quadratic function found?

    <p>By solving the equation ax^2 + bx + c = 0</p> Signup and view all the answers

    What does the parameter 'a' represent in the standard form of a quadratic function, $y = ax^2 + bx + c$?

    <p>The direction and width of the parabola</p> Signup and view all the answers

    What is the formula for the axis of symmetry of a quadratic function in standard form, $y = ax^2 + bx + c$?

    <p>$x = -b/2a$</p> Signup and view all the answers

    Which of the following is NOT a key characteristic of a quadratic function described in the text?

    <p>The function has a constant rate of change</p> Signup and view all the answers

    Which of the following is the correct vertex form of a quadratic function?

    <p>$y = a(x - h)^2 + k$</p> Signup and view all the answers

    What is the general form of a hyperbolic function as described in the text?

    <p>$y = rac{a}{x - h} + k$</p> Signup and view all the answers

    What is the first step in the graphing process for a quadratic function as described in the text?

    <p>Identify the vertex</p> Signup and view all the answers

    What is the domain of a quadratic function?

    <p>All real numbers</p> Signup and view all the answers

    How are the x-intercepts of a quadratic function found?

    <p>Both a and b</p> Signup and view all the answers

    What information is needed to determine the orientation of a hyperbolic function's graph?

    <p>Both the value of $a$ and the values of $h$ and $k$</p> Signup and view all the answers

    If a quadratic function has no real x-intercepts, what can be inferred about its graph?

    <p>The graph does not intersect the x-axis</p> Signup and view all the answers

    What property of a quadratic function determines the direction of its opening?

    <p>The value of the coefficient $a$</p> Signup and view all the answers

    If a hyperbolic function has a horizontal asymptote at $y = k$, what can be said about its range?

    <p>The range excludes the value $k$</p> Signup and view all the answers

    Which transformation would reflect a quadratic function across the y-axis?

    <p>Replacing $x$ with $-x$</p> Signup and view all the answers

    What is the significance of the discriminant in a quadratic function?

    <p>It determines the number of real solutions to the equation</p> Signup and view all the answers

    If a quadratic function has a vertex at $(h, k)$, what can be said about its graph?

    <p>The graph has a maximum or minimum point at $(h, k)$</p> Signup and view all the answers

    What is the significance of the value of $h$ in a hyperbolic function?

    <p>It represents the vertical asymptote</p> Signup and view all the answers

    If two quadratic functions have the same value of $a$, what can be inferred about their graphs?

    <p>They have the same orientation</p> Signup and view all the answers

    Which of the following statements about the orientation of a hyperbolic function's graph is correct?

    <p>The orientation is governed by the coefficient $a$ and the shifts indicated by $h$ and $k$.</p> Signup and view all the answers

    What is the significance of the parameter $h$ in a hyperbolic function?

    <p>It represents the vertical asymptote of the function.</p> Signup and view all the answers

    Which of the following steps is NOT included in the process of constructing the graph of a hyperbolic function?

    <p>Determine the vertex of the function.</p> Signup and view all the answers

    If a quadratic function has a vertex at $(h, k)$, what can be said about its graph?

    <p>The graph is symmetric about the point $(h, k)$.</p> Signup and view all the answers

    What is the purpose of equating different functions and solving for the variable when finding intersection points?

    <p>To find the values of the variable where the functions intersect.</p> Signup and view all the answers

    Which transformation would reflect a quadratic function across the line $y = x$?

    <p>$x = -(y - k)^2 + h$</p> Signup and view all the answers

    Which of the following statements about the range of a hyperbolic function is correct?

    <p>The range excludes values leading to undefined states and is determined by the asymptotes' positions.</p> Signup and view all the answers

    What is the significance of the discriminant in a quadratic function?

    <p>It determines the number of real solutions to the equation.</p> Signup and view all the answers

    Which of the following is NOT a key attribute of a quadratic function described in the text?

    <p>Period</p> Signup and view all the answers

    If a quadratic function has $a = 2$, what can be said about the shape of its graph?

    <p>The parabola opens upward and is wider than the standard parabola $y = x^2$.</p> Signup and view all the answers

    If the vertex of a quadratic function is $(3, -2)$, what is the value of $h$ in the vertex form $y = a(x - h)^2 + k$?

    <p>3</p> Signup and view all the answers

    Which of the following is the correct axis of symmetry for the quadratic function $y = 2x^2 - 4x + 3$?

    <p>$x = 1$</p> Signup and view all the answers

    If a quadratic function has no real x-intercepts, what can be said about its discriminant $b^2 - 4ac$?

    <p>The discriminant is negative.</p> Signup and view all the answers

    In the hyperbolic function $y = \frac{3}{x - 2} + 4$, what is the value of $h$?

    <p>2</p> Signup and view all the answers

    What is the range of the hyperbolic function $y = \frac{-2}{x + 1} + 3$?

    <p>All real numbers greater than 3</p> Signup and view all the answers

    If two quadratic functions have the same value of $a$, what can be inferred about their graphs?

    <p>Their graphs will have the same orientation but different widths.</p> Signup and view all the answers

    Which of the following is NOT a characteristic of a quadratic function described in the text?

    <p>The horizontal asymptote</p> Signup and view all the answers

    What is the significance of the parameter $h$ in a hyperbolic function?

    <p>It determines the horizontal asymptote of the function.</p> Signup and view all the answers

    How are the x-intercepts of a quadratic function found?

    <p>By setting the function equal to zero and solving for $x$.</p> Signup and view all the answers

    If a quadratic function has no real x-intercepts, what can be inferred about its discriminant $b^2 - 4ac$?

    <p>The discriminant is negative.</p> Signup and view all the answers

    What is the significance of the discriminant in a quadratic function?

    <p>It determines the number and nature of the x-intercepts.</p> Signup and view all the answers

    Which transformation would reflect a quadratic function across the line $y = x$?

    <p>Reflection across the line $y = x$</p> Signup and view all the answers

    What is the general form of a hyperbolic function as described in the text?

    <p>$y = rac{a}{x - h} + k$</p> Signup and view all the answers

    What is the role of the coefficient $a$ in determining the orientation of a hyperbolic function's graph?

    <p>The sign of $a$ determines the direction of the function's branches.</p> Signup and view all the answers

    What is the purpose of the structured approach described in the text for understanding and applying quadratic and hyperbolic functions?

    <p>To identify the key attributes and properties of these functions.</p> Signup and view all the answers

    How do transformations such as translations, dilations, and reflections affect the base graph of a function?

    <p>They modify the shape and position of the base graph.</p> Signup and view all the answers

    What is the purpose of the structured approach described in the text for understanding and applying quadratic and hyperbolic functions?

    <p>To highlight the key characteristics and properties of quadratic and hyperbolic functions</p> Signup and view all the answers

    If a quadratic function has a vertex at $(h, k)$, what can be said about its graph?

    <p>The graph will be symmetric about the line $x = h$</p> Signup and view all the answers

    What is the significance of the discriminant $b^2 - 4ac$ in a quadratic function?

    <p>It determines the number of real $x$-intercepts of the function</p> Signup and view all the answers

    In the hyperbolic function $y = \frac{3}{x - 2} + 4$, what is the value of $h$?

    <p>$2</p> Signup and view all the answers

    What is the formula for the axis of symmetry of a quadratic function in standard form, $y = ax^2 + bx + c$?

    <p>$x = \frac{-b}{2a}$</p> Signup and view all the answers

    What is the significance of the parameter $h$ in a hyperbolic function?

    <p>It determines the location of the vertical asymptote of the function</p> Signup and view all the answers

    If a quadratic function has $a = 2$, what can be said about the shape of its graph?

    <p>The graph will be a parabola that opens upward</p> Signup and view all the answers

    Which of the following statements about the range of a hyperbolic function is correct?

    <p>The range of a hyperbolic function is dependent on the location of the horizontal asymptote</p> Signup and view all the answers

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