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. 2 B. 1
    C. 6 D. 3
    Hint

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

  4.   Which line has a slope of and passes through (2, -4)?
    A.
    B.
    C.
    D.
    Hint

  5.   What is the slope of in parallelogram ABCD?
   
    A. B.
    C. D.
    Hint