Point-Slope Form

Introduction

Example 2

Write the equation of the line in point-slope form that passes through the points (-2, 4) and (1, 2).

Step 1. Identify the points

x1 = -2, x2 = 1; y1 = 4, y2 = 2

Step 2. Substitute the values in the Point-Slope Formula and simplify to find m.

PS_ex2-1

Step 3. Select one point and use m to substitute into formula.

Using (-2, 4) as (x1, y1)

PS_ex2-2