Algebra 2A - Unit 2 Exam Flashcards
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Questions and Answers

Which expressions are factors of the function represented in the graph? Select all that apply.

  • (x - 1) (correct)
  • (x + 4) (correct)
  • What is the domain and range of the function represented by the graph?

    Domain: (−∞, ∞), Range: [5, ∞)

    Which statement is true about the function represented by the graph?

    The function has a minimum of -16.

    Which statement is true about the end behavior of the function represented by the graph?

    <p>As x approaches −∞, f(x) approaches ∞, and as x approaches ∞, f(x) approaches ∞.</p> Signup and view all the answers

    Which statements are true about the function represented by the points in the table?

    <p>The function has a minimum. A reasonable estimate of the minimum is −7.25.</p> Signup and view all the answers

    Which statements are true about the intercepts of the function? Select all that apply.

    <p>The function has an x-intercept of (−2, 0)</p> Signup and view all the answers

    Which graph represents the same function as provided in the table?

    <p>Graph URL: <a href="https://assets.learnosity.com/organisations/625/asset/media/1236411">https://assets.learnosity.com/organisations/625/asset/media/1236411</a></p> Signup and view all the answers

    Which graph matches the following description: The function is increasing over the interval (−∞, 1) and decreasing over the interval (1, ∞), has a maximum of 3, and a y-intercept of (0, 2)?

    <p>Graph URL: <a href="https://assets.learnosity.com/organisations/625/asset/media/1236415">https://assets.learnosity.com/organisations/625/asset/media/1236415</a></p> Signup and view all the answers

    What are the x- and y-intercepts of the function f(x) = x^2 − 9x − 36?

    <p>X-intercepts: (12, 0), (-3, 0); Y-intercept: (0, -36)</p> Signup and view all the answers

    Which statement correctly describes the end behavior of the function f(x) = −x^2 + 3x + 12?

    <p>As x approaches −∞, f(x) approaches −∞, and as x approaches ∞, f(x) approaches −∞.</p> Signup and view all the answers

    What are the coordinates of the vertex of the following function f(x) = x^2 − 18x + 88?

    <p>(9, 7)</p> Signup and view all the answers

    Which expression correctly describes the range of the function f(x) = (x + 12)^2 + 9?

    <p>9 ≤ f(x) &lt; ∞</p> Signup and view all the answers

    Which graph represents the same function as f(x) = x^2 − 4x − 5?

    <p>Graph URL: <a href="https://assets.learnosity.com/organisations/625/asset/media/1236580">https://assets.learnosity.com/organisations/625/asset/media/1236580</a></p> Signup and view all the answers

    Which function rule correctly describes the function represented in the graph?

    <p>f(x) = (x + 3)(x - 1)</p> Signup and view all the answers

    What equation represents the combined area of the pool and the deck?

    <p>(9 + 2w)(12 + 2w) = 270</p> Signup and view all the answers

    Which equation represents the height of the rubber band during the seconds after it is shot?

    <p>h = −16t^2 + 26.4t + 15</p> Signup and view all the answers

    Which measures are possible widths for Max's garden? Select all that apply.

    <p>8 feet</p> Signup and view all the answers

    How long does it take the marshmallow to hit the ground, where h = 0?

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

    Which answer correctly explains the domain and range of the given situation?

    <p>The domain is 0 to 6.1 seconds, and the range is 0 to 24.76 feet.</p> Signup and view all the answers

    Match each question with the value that correctly answers the question.

    <p>What is the maximum height reached by the rocket? = 24.76 feet After how many seconds does the rocket reach that height? = 2.55 seconds At what height is the rocket launched? = 12 feet How many seconds after launching did the rocket land? = 6.1 seconds</p> Signup and view all the answers

    Which graph has the most appropriate labels and scales to graph the equation?

    <p>Graph URL: <a href="https://assets.learnosity.com/organisations/625/asset/media/1236892">https://assets.learnosity.com/organisations/625/asset/media/1236892</a></p> Signup and view all the answers

    Match the following questions with their respective values regarding Emily shooting an arrow upward with a bow.

    <p>What is the maximum height reached by the arrow? = 90.69 feet After how many seconds does the arrow reach that height? = 2.34 seconds At what height is the arrow shot? = 2.8 feet How many seconds after shooting did the arrow land? = 4.73 seconds</p> Signup and view all the answers

    Study Notes

    Factors of Functions

    • Factors of the function graphed include (x - 1) and (x + 4).

    Domain and Range

    • The domain of the function is (−∞, ∞).
    • The range of the function is [5, ∞).

    Minimum Value

    • The function has a minimum value of -16.

    End Behavior of Functions

    • For the given graph, as x approaches −∞, f(x) approaches ∞; as x approaches ∞, f(x) approaches ∞.

    Minimum of Quadratic Functions

    • The function depicted has a minimum value, approximately -7.25.

    Intercepts of Functions

    • The x-intercepts are (1, 0) and (−2, 0).
    • The y-intercept is (0, −2).

    Graph Representation

    • A specific graph can represent the quadratic function indicated in the table.

    Characteristics of Graphs

    • A function increases over the interval (−∞, 1) and decreases over (1, ∞).
    • It has a maximum value of 3 and a y-intercept at (0, 2).

    X- and Y-Intercepts

    • For the function f(x) = x^2 − 9x − 36, x-intercepts are (12, 0) and (-3, 0), while the y-intercept is (0, -36).

    End Behavior of Specific Function

    • For f(x) = −x^2 + 3x + 12, as x approaches both −∞ and ∞, f(x) approaches −∞.

    Vertex of Quadratic Function

    • The vertex of the function f(x) = x^2 − 18x + 88 is (9, 7).

    Range of Transformed Functions

    • For f(x) = (x + 12)^2 + 9, the range is 9 ≤ f(x) < ∞.

    Graph Matching for Quadratic Equation

    • The graph that corresponds to the function f(x) = x^2 − 4x − 5 can be identified based on graphical representation.

    Function Rule Representation

    • The function rule that describes the graph is f(x) = (x + 3)(x - 1).

    Combined Area Equation

    • The equation representing the combined area of a pool and deck is (9 + 2w)(12 + 2w) = 270.

    Height Equation for Rubber Band

    • The height of the rubber band after being shot is represented by h = −16t^2 + 26.4t + 15.

    Possible Widths for a Garden

    • Possible widths for Max's garden include 2 feet, 8 feet, and 9 feet.

    Time for Objects to Hit Ground

    • The marshmallow takes 2 seconds to reach the ground (h = 0).

    Domain and Range in Context

    • The domain ranges from 0 to 6.1 seconds, and the range is from 0 to 24.76 feet.

    Questions and Values for Rocket

    • Maximum height reached by the rocket is 24.76 feet.
    • Time taken to reach this height is 2.55 seconds.
    • Launching height of the rocket is 12 feet.
    • It lands 6.1 seconds after launch.

    Appropriate Graph Labels

    • The graph selected must have the correct labels and scales for the equation.

    Arrow Shooting Data

    • The maximum height of the arrow is 90.69 feet, reached at 2.34 seconds.
    • It is shot from a height of 2.8 feet and lands after 4.73 seconds.

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    Description

    Test your knowledge with these flashcards for Algebra 2A, focusing on Unit 2 concepts. Examine various graphs to identify factors, domains, and ranges of functions represented. Perfect for reviewing key algebra skills and preparing for exams.

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