1. Aim: What is the equation of a line? Do Now: Find the slope of the line 8x + 5y = 20 This is the slope – intercept form y = mx + b HW: Handout

2. 8x + 5y = 20 is the called general form We use the notation Ax + By + C = 0 for general form of a line What is the slope formula? We can change the general form to slope- intercept form by solving for y

3. If we cross-multiply This is called point-slope form

4. Summary of the equation of a line I. slope-intercept form y = mx + b II. General form Ax + By + C = 0

6. Drill