1. Objective Write equations in slope-intercept form. Identify slope and y-intercept from an equation. 3.2 Slope-Intercept Form of a Linear Equation

2. Slope–Intercept Form of a Linear Equation y = mx + b m represents the slope b represents the y-intercept

3. Writing Equations When asked to write an equation for a line in slope-intercept form, you need to know two things: 1)slope (m) 2)y-intercept (b).

4. Writing Equations Write an equation in slope-intercept form of the line that has a slope of 2 and a y-intercept of 6. To write an equation, you need two things: slope (m) = y – intercept (b) = We have both!! Plug them into slope-intercept form y = mx + b y = 2x + 6 2 6

5. Write the equation of a line that has a y-intercept of -3 and a slope of -4. A.y = -3x – 4 B.y = -4x – 3 C.y = -3x + 4 D.y = -4x + 3

6. To find the slope and y-intercept of an equation, write the equation in slope-intercept form: y = mx + b. Find the slope and y-intercept. 1)y = 3x – 7 y = mx + b m = 3, b = -7

7. Find the slope and y-intercept. 2)y = x y = mx + b y = x + 0 3)y = 5 y = mx + b y = 0x + 5 m = b = 0 m = 0 b = 5

8. -3 Find the slope and y-intercept. 4)5x – 3y = 6 Write it in slope-intercept form. (y = mx + b) 5x – 3y = 6 -3y = -5x + 6 y = x – 2 m = b = -2

9. Write it in slope-intercept form. (y = mx + b) 2y + 2 = 4x 2y = 4x – 2 y = 2x – 1 Find the slope and y-intercept. 5) 2y + 2 = 4x 222 m = 2 b = -1

10. Find the slope and y-intercept of y = -2x + 4 1.m = 2; b = 4 2.m = 4; b = 2 3.m = -2; b = 4 4.m = 4; b = -2

11. Assignment 3.2 Worksheet