8th Grade · Expressions & Equations
Slope-Intercept Form
8.EE.B.6
Definition
A linear equation written as y equals m x plus b, where m is the slope and b is the y-intercept. It makes graphing a line quick and direct.
Examples
- y = 2x + 3: slope 2, y-intercept 3.
- Start at b on the y-axis, then use the slope to step to the next point.
Key rule
Start at the y-intercept, then use the slope to graph the line.
Memory hook
y = mx + b — slope and starting point in one equation.