Question

find p if the slope of a line joining (-5,15) and (4,p) is -1/9
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Answer 1

Slope of a line formula:-

m = (y2-y1)/(x2-x1)

→ -1/9 = (p-15)/(4+5)

→ -1/9 = (p-15)/9

→ p-15 = -1

→ p = 14

Answer 2

Answer:

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