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WILL MARK AS BRAINLIEST

The points (-7,r) and (-3, 4) lie on a line with slope - 3/4.

Find the missing coordinate r

WILL MARK AS BRAINLIEST The points 7r and 3 4 lie on a line with slope 34 Find the missing coordinate r class=

Respuesta :

for A (xa ; ya) and B (xb ; yb)

the slope is (yb - ya) / (xb - xa)

here :

slope = - 3/4 = (4 - r) / (-3 - (-7))

(4 - r) / 4 = - 3/4

so 4 - r = - 3

then r = 7

check

points (-7 ; 7) and (-3 ; 4)

slope = (4 - 7) / (-3 - (-7) = -3/4

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