Algebra 1 Study Guide Flashcards
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Questions and Answers

What is the definition of linear equations?

  • An equation that gives a curve when plotted.
  • An equation involving only constants.
  • An equation between two variables that gives a straight line when plotted on a graph. (correct)
  • An equation without any variables.
  • What is an example of the Slope Intercept Form?

    y = 4x + 3

    Point-slope form for linear equations is represented as y - y₁ = ____ (x - x₁).

    m

    Parallel lines are lines that eventually meet.

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

    What is the first step to graphing linear equations in slope-intercept form?

    <p>Locate the y-intercept on the graph and plot the point.</p> Signup and view all the answers

    What is the solution of the linear system mentioned?

    <p>(1, 6)</p> Signup and view all the answers

    Match the following exponent rules with their definitions:

    <p>Product to power = When multiplying like bases, add the exponents. Quotient to power = When dividing like bases, subtract the exponents. Power to power = When raising a power to another power, multiply the exponents. Negative exponents = A negative exponent indicates that the base is on the opposite side of the fraction line.</p> Signup and view all the answers

    According to the zero exponent rule, any base with an exponent of zero is equal to one.

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

    An arithmetic sequence is a sequence of numbers such that the difference between _____ terms is constant.

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

    Study Notes

    Linear Equations

    • Defined as an equation involving two variables that produces a straight line when graphed.

    Slope Intercept

    • The format y = mx + b where m represents the slope and b is the y-intercept.
    • Example: In y = 4x + 3, the slope is 4 and the y-intercept is 3.

    Point-Slope Form

    • Expressed as y - y₁ = m(x - x₁), focusing on the slope of the line and a known point on the line.

    Parallel and Perpendicular Lines

    • Parallel lines do not intersect in a plane.
    • Perpendicular lines intersect at a 90° angle.

    Graphing Linear Equations in Slope-Intercept Form

    • Start by identifying the y-intercept and plotting the point.
    • Use the slope to find a second point, then draw the line connecting the two points.

    Graphing Using Intercepts

    • Involves writing a linear equation in standard form to identify intercepts for graphing.

    Solving Systems of Equations

    • Use substitution by replacing one variable with its equivalent from another equation.
    • Example solution: (1, 6) can be obtained via this method.

    Solving by Substitution

    • First, rearrange one equation to isolate a variable.
    • Substitute the found value into another equation to solve for the remaining variable.

    Solving by Elimination

    • Create equations with matching coefficients for a variable to eliminate it.
    • Solve for the remaining variable, then substitute back to find the other variable.

    Exponents

    • Represents the power to which a base number or expression is raised, usually shown as a superscript.

    Product to Power Rule

    • Simplifying involving multiplications with exponents by adding the exponents of like bases.

    Quotient to Power Rule

    • When dividing terms with the same base, subtract the exponents of the base.

    Power to Power

    • The dimension of power relates to energy over time, with the standard unit being Watts.

    Negative Exponents

    • A negative exponent indicates reciprocal; move the base to the opposite side of the fraction line and change the exponent to positive.

    Zero Exponent Rule

    • Any base raised to the power of zero equals one.

    Polynomials

    • Defined as expressions with more than two algebraic terms, comprising variables raised to various powers.

    Multiplying Polynomials

    • Multiply coefficients, and add exponents of like bases; after distribution, combine like terms.

    Factoring Polynomials

    • Involves identifying and extracting common factors from polynomial expressions.

    Sequences

    • A structured order of related events or items following one another.

    Arithmetic Sequences

    • A sequence where the difference between consecutive terms remains constant.
    • Example: 5, 7, 9, 11, 13, ... presents a common difference of 2.

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    Explore key concepts from Algebra 1 with these helpful flashcards. Learn about linear equations, slope intercept form, and point-slope form. Perfect for quick study sessions and reviewing important algebraic principles.

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