SOLUTION: Determine whether the lines through each pair of points are perpendicular (-2,-7) and (3,13) (-1,-9) and (5,15)

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Question 1068613: Determine whether the lines through each pair of points are perpendicular
(-2,-7) and (3,13)
(-1,-9) and (5,15)
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
Compute the slope for each pair. Are these two slopes such that m%5Ba%5D%2Am%5Bb%5D=-1? If yes or no, what does this mean for each?