Term

Linear Equation

Definition

Equation that makes a straight line when graphed. Form: y = mx + b. m = slope (steepness), b = y-intercept (where it crosses y-axis). Ex: y = 2x + 3.

Term

Slope

Definition

Rise over run: change in y / change in x. Positive = up right, negative = down right. Ex: Points (1,2) and (3,6): slope = (6-2)/(3-1) = 2.

Term

System of Equations

Definition

Two or more equations solved together. Methods: substitution or elimination. Solution: point where lines intersect.