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

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

  3.   Determine the slope of the line graphed below.
   
    A. B.
    C. 0 D.
    Hint

  4.   Find the slope of the line that passes through (-2, 9.5) and (4, 5).
    A. 0 B. undefined
    C. D.
    Hint

  5.   Which of the following pairs of coordinates are on a line with an undefined slope?
    A. (3, -2), (3, 5) B. (-4, -3), (3, -3)
    C. (-2, -2), (4, 4) D. (2, 1), (5, -2)
    Hint



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