1.   Which equation is graphed below?
   
    A. B.
    C. D.
    Hint

  2.   Which expression is used to find the slope of a line?
    A. m =
    B. m =
    C. m =
    D. m =
    Hint

  3.   Find the slope of the line graphed below.
   
    A. B. 4
    C. D. -4
    Hint

  4.   Which ordered pair is a solution of y < -4x - 5?
    A. (0, 6) B. (2, 3)
    C. (-7, 0) D. (1, -3)
    Hint

  5.   Determine whether the relation {(7, 2), (-10, 3), (-5, -1), (7, 3)} is a function. Explain.
    A. No, because there are two elements in the domain that are paired with the same element in the range.
    B. Yes, because each element in the domain is paired with exactly one element in the range.
    C. Yes, because every relation is a function.
    D. No, because there is an element in the domain that is paired with two elements in the range.
    Hint

  6.   Select the relation that is a function.
    A. {(21, 11), (21, 10), (21, 9), (21, 8)}
    B. {(-6, -5), (3, 2), (10, 8), (3, 3)}
    C. {(5, 10), (-3, 10), (-3, -10), (4, 7)}
    D. {(-2, -1),(5, -1), (16, 3), (-3, -9)}
    Hint

  7.   Find four solutions for y = 3x 1 if the x values are 0, 1, 2, 3.
    A. (0, -1), (1, 2), (2, 5), (3, 8)
    B. (0, 0), (1, 3), (2, 6), (3, 9)
    C. (0, 1), (1, 4), (2, 7), (3, 10)
    D. (-1, 0), (2, 1), (5, 2), (8, 3)
    Hint

  8.   Graph 2x 8y = 16.
    A. B.
    C. D.
    Hint

  9.   Find the x- intercept of 4x 6y = 24.
    A. -6 B. 4
    C. -4 D. 6
    Hint

  10.   Suppose y varies directly with x and y = -10 when x = 5. Write an equation relating x and y.
    A. B.
    C. y = 2x D. y = -2x
    Hint

  11.   The direct variation equation y = 0.1x gives the price y for x minutes of a long distance calling plan. Use the equation to find the cost for a phone call that is 32.5 minutes long.
    A. $3.28 B. $3.20
    C. $3.30 D. $3.25
    Hint

  12.   Which of the following is the equation for the given graph?
   
    A. B.
    C. D.
    Hint

  13.   State the slope of the graph of 6x + 3y = 10.
    A. 2 B. -2
    C. D.
    Hint

  14.   Write an equation in slope-intercept form of a line with slope 5 and y- intercept 7.
    A. y = 5x 7 B. y = 5x + 7
    C. x = 5y + 7 D. x = 5y 7
    Hint

  15.   Write an equation in slope-intercept form of a line with slope 0 and y- intercept 6.
    A. x = 6y B. y = 6
    C. y = 6x D. x = 6
    Hint

  16.   Write an equation in slope-intercept form for the best-fit line of a scatter plot with points (21, 57) and (30, 12).
    A. y = 5x 48 B. y = -5x + 162
    C. D.
    Hint

  17.   A best-fit line has the equation which models the number of hours y of a trip that is x miles long. Predict the time of a 200-mile trip.
    A. about 4.6 hours B. about 3.1 hours
    C. about 3.8 hours D. about 2.3 hours
    Hint

  18.   Solve the system of equations given by 3y = 6x + 3 and y = 2x + 1.
    A. (0, 1) B. no solution
    C. (-2, -3) D. infinitely many solutions
    Hint

  19.   Solve the system of equations given byy = 2x 7 and y = 5.
    A. (-1, 5) B. (5, 3)
    C. (3, 5) D. (6, 5)
    Hint

  20.   Match the graph shown with the correct inequality.
   
    A. B. y < -4x 6
    C. D.
    Hint



Glencoe
The McGraw-Hill Companies