Question

A line with a slope of 6/7 passes through the points (5,8) and (u,2). What is the value of u?

Answer 1

The value of u is -2.

Explanation:

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

6/7=(2-8)/(u-5)

6/7=-6/(u-5)

6/7(u-5)=-6

6/7u-30/7=-6

6/7u=-6+30/7

6/7u=-42/7+30/7

6/7u=-12/7

u=(-12/7)/(6/7)

u=(-12/7)(7/6)

u=-12/6

u=-2