Unit 4 Linear Equations Study Guide
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Questions and Answers

Which of the following represents the equation of the line graphed below?

  • 2x – y = 4
  • x – 2y = 8
  • x + 2y = 8
  • 2x + y = 4 (correct)

    • What is the equation of the line represented by the graph below?

  • 5x – 3y = 3
  • 5x + 3y = 3
  • 3x – 5y = 5 (correct)
  • 3x + 5y = 5

    • In the equation 4x – y = 4, what is the y-intercept?

  • 1
  • -4
  • -1
  • 4 (correct)

    • What are the x- and y-intercepts of the equation 12x – 8y = 24?

    <p>(2, 0), (0, -3)</p> Signup and view all the answers

    What type of line is represented by the equation y = -2?

    <p>Horizontal line</p> Signup and view all the answers

    Which of the following represents a linear equation with a slope of 1 and a y-intercept of -7?

    <p>$y = x - 7$</p> Signup and view all the answers

    What is the slope of a line parallel to the line 5x – 2y = 18?

    <p>y = 2x + 1</p> Signup and view all the answers

    What is the slope of a line perpendicular to the line y = -3x + 2?

    <p>x – 3y = 3</p> Signup and view all the answers

    Which equation represents a line parallel to y = -4x + 5 and passes through the point (-2, -1)?

    <p>y = 2x + 1</p> Signup and view all the answers

    Which equation represents a line perpendicular to 3x – 5y = 5 and passes through the point (9, -14)?

    <p>3x + y = 4</p> Signup and view all the answers

    Use the line of best fit to predict the number of students enrolled in Beach Manor Preschool in 2010.

    <p>85</p> Signup and view all the answers

    Estimate Luke’s score for week 12 using the line of best fit from the given data.

    <p>78</p> Signup and view all the answers

    How many prints can MaryAnn order from the online print shop with $35 to spend?

    Signup and view all the answers

    How much did the Jones Family pay for renting the pontoon boat at Smith Mountain Lake Boat Rentals?

    <p>$155.00</p> Signup and view all the answers

    How many wreaths did Alaina sell if she made $543 from selling poinsettias and wreaths?

    <p>$27 each, approximately 18 wreaths</p> Signup and view all the answers

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