Question

Identify the equation that describes the line in slope-intercept form.

slope = 2, point (-1,2) is on the line

A. y = 2x + 2

B. y = 2x

C. y = 2x - 4

D. y = 2x + 4

Answer 1

D) y = 2x + 4

Explanation:

plug the slope and the x-and-y coordinates into the slope-intercept form of a line to get the y-intercept:

y = mx + b

2 = 2(-1) + b

2 = -2 + b

4 = b

y = 2x + 4