Question

Find the value of r so the line that passes through the pair of points has the given slope,

(2, r), (8, –4) m = –3

Answer 1

Answer:r = 14

Explanation:

Answer 2

r = 14

Explanation:

Slope =
`(y_(2)-y_(1))/(x_(2)-x_(1))\\`

`(-4-r)/(8-2)= -3 \\\\(-4 - r)/(6) = - 3`

Cross multiply,

-4 - r = -3*6

-4 - r = -18

-4 = - 18 + r

-4 + 18 = r

r = 14