If a line has a slope of two it passes through the points (1,2) and (3,y) what’s the value of Y

Answer 1

Slope equals the change in y divided by the change in x, so

 

slope = (y₂ - y₁)/(x₂ - x₁)

2 = (y - 2)/(3 - 1)

2 = (y - 2)/2

4 = y - 2

y = 6