Question

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Answer 1

To get the slope of two coordinate pairs you just find the difference in y and divide it by the difference in x.
1.  (-2) - 5 / (-2) - 3
          (-7) / -(5)
              7/5
4.     2 - 6 / (-7) - 1
         (-4) / (-8)
              1/2
7. (-1) - 4 / (-2) - (-7)
         (-5) / 5
              -1