Practice!

Sample Problem

Write the equation of this line in slope-intercept form.

y = x +

Solution

A linear equation of a slope-intercept form y = mx + b , m is the slope and b is the y-intercept.

From the graph, we can see that the slope is 2, and the y-intercept is (0, -1).

The equation of this line is therefore y = 2x – 1.