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 (5, 2) and (7, r) has a slope of .
   
    A. 3 B. 6
    C. 2 D. 1
    Hint

  3.   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

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

  5.   Determine the slope of the line that passes through (2, 2) and (5, 8).
    A. 2 B. -2
    C. D.
    Hint