Question

A line that includes the points (j,

–
7) and (5,3) has a slope of
10
7
. What is the value of j?

Answer 1

j = 7.8.

Explanation:

The slope of the line = difference in y-values / corresponding difference in x-values.

Slope = (7-3) / (j-5) = 10/7

so 10(j - 5) = 7*4

10j - 50 = 28

10j = 78

j = 7.8.