1. Objective The student will be able to:
Write the equation of a line given the slope and y-intercept.
Identify slope and y-intercept from an equation.

2. b represents the y-intercept
Important!!!
Slope – Intercept Form
y = mx + b
m represents the slope
b represents the y-intercept

3. To write the equation of a line in slope-intercept form (y = mx + b) given the slope and y-intercept .
Write the equation of the line given: m = -3, b = 2 Plug in the slope and y-intercept. y = mx + b m = -3, b = 2 so y = -3x +2

4. Find the slope and y-intercept. y = 3x – 7 y = mx + b m = 3, b = -7
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.
y = 3x – 7
y = mx + b
m = 3, b = -7

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

6. 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 -3 -3 -3
m =
b = -2

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

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