Find the value of r (5,9) (r,7) m=-4

asked Dec 23, 2021 85.3k views

3 votes

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1 vote

Answer:

r = 11/2

Explanation:

m = slope

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

-4 = (7 - 9)/(r - 5)

cross multiply

-4(r - 5) = 7 - 9

clearing brackets

-4r + 20 = -2

-4r = -22

r = 22/4 = 11/2

Navid Zarepak answered Dec 27, 2021

4.8k points

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