EQ005 · Equations & inequalities · Classes 8–12
Linear Equations
An equation whose graph is a straight line: y = mx + c.
Linear Equations📐 Formula
Slope m = rise ÷ run; x-intercept = −c ÷ m
✏️ Worked example
y = 0.5x − 1: slope 0.5; crosses the x-axis at x = 2.
🌍 Where it is used
Taxi fares, mobile plans and unit conversions.
❓ Quick check
x-intercept of y = 2x − 6: