Question

The graph of a function is line that passes through the points (1,4) (3,8) and (6,y) what is the value of y?

Answer 1

Explanation:

First, find the slope from the first 2 points, then use the value of the slope and either one of the first 2 points to find y in the 3rd point.

m = (8 - 4)/(3 - 1) = 4/2 = 2

2 = (y - 4)/(6 - 1)