Question

Find the missing value so that the line passing through the points has the given slope.

(10, y) and (3, 4); m= - 2/7

Answer 1

y = 2

Explanation:

use slope formula:

(4 - y) / (3 - 10) = -2/7

4-y / -7 = -2 /7

cross-multiply:

7(4 - y) = (-7)(-2)

28 - 7y = 14

-7y = -14

y = 2