1.   If y varies directly as x and y = 35 when x = 5, find y when x = 11.
    A. B. 41
    C. 77 D. 7
    Hint

  2.   What is the slope of the line that passes through (8, 4) and (6, 7)?
    A. B.
    C. D.
    Hint

  3.   Determine the value of r so that the line through (r, 4) and (-7, 7) has a slope of .
   
    A. 9 B. 3
    C. -11 D. -3
    Hint

  4.   Write the standard form of an equation of the line that passes through
(-2, 3) and has a slope of m = -3.
    A. 3x + y = -9 B. y = -3x - 9
    C. 3x + y = -3 D. 3x + y = 9
    Hint

  5.   What is implied when it is said that x and y have a negative correlation?
    A. When the value of x is negative, the value of y negative.
    B. When the value of x increases, the value of y decreases.
    C. When the value of x increases, the value of y does not necessarily increase or decrease.
    D. When the value of x increases, the value of y increases.
    Hint

  6.   The equation V = -32t + 256 and the graph below describe the velocity V in feet per second of a ball t seconds after is is shot into the air. What is the ball's velocity after seven seconds?
   
    A. 256 ft/s B. 0 ft/s
    C. 32 ft/s D. 480 ft/s
    Hint

  7.   Use the direct variation equation to find x when y = -34.
    A. x = B. x = -153
    C. x = - D. x = 153
    Hint

  8.   Write an equation of the line whose slope is and whose y-intercept is 2.
    A. B.
    C. D.
    Hint

  9.   Write an equation of a line that passes through (9, -64) with slope –7.
    A. y = -7x – 127 B. y = -7x
    C. y = -7x – 1 D. y = -7x + 1
    Hint

  10.   A rental car company charges $75 for a 3-day rental and $155 for a 7-day rental. Write an equation to find the amount that the rental car company will charge for any number of days.
    A. y = 80x B. y = 80x – 165
    C. y = 20x D. y = 20x + 15
    Hint

  11.   Write in slope-intercept form.
    A. B.
    C. 2x - 9y = -55 D.
    Hint

  12.   Line segment has endpoints A(-6, -3) and B(2, 1). Line segment has endpoints C(-4, 8) and D(3, -6). Is perpendicular to ? Why?
    A. No, the lines intersect but not at right angles.
    B. No, the lines are parallel.
    C. Yes, the slopes are opposites.
    D. Yes, the slopes are negative reciprocals.
    Hint

  13.   Write the slope-intercept form of an equation for the line that passes through (-4, -26) and is parallel to
    A. B.
    C. D.
    Hint

  14.   What is implied when it is said that x and y have a positive correlation?
    A. When the value of x increases, the value of y does not necessarily increase or decrease.
    B. When the value of x increases, the value of y decreases.
    C. When the value of x increases, the value of y increases.
    D. When the value of x decreases, the value of y does not necessarily increase or decrease.
    Hint



Glencoe
The McGraw-Hill Companies