In y=mx+b, b=y-intercept OR Graphically, the y-intercept is the y-value where the graph intersects the y-axis.
Work Step by Step
The y-intercept represents the y value of an equation when x=0. You can find the y-intercept of the graph of a linear equation by expressing the equation in slope-intercept form, or y=mx+b, where b=y-intercept. You can also find the y-intercept of an equation by observing where the graph intersects the y-axis.