Answer :
1. (0,7) (0,-8)
points belong to a vertical line. There is no slope.
2. (-7,9) (-18,9)
points belong to a constant, linear function.
Slope= 0
3. (-5,9)(7,3)
m = -6 / 12 = -1 / 2 = Slope -0.5
4. (-7,8)(8,-3)
m = -11 / 15 = Slope -0.73333
points belong to a vertical line. There is no slope.
2. (-7,9) (-18,9)
points belong to a constant, linear function.
Slope= 0
3. (-5,9)(7,3)
m = -6 / 12 = -1 / 2 = Slope -0.5
4. (-7,8)(8,-3)
m = -11 / 15 = Slope -0.73333