1. Slope Intercept Form

2. Y intercept
To find the y-intercept, plug 0 in for x in the linear equation and solve for y.
y=3x (0, -6)

3. Y intercept
The y-intercept is the point where a line crosses the y axis.
At this point the value of x is 0.

4. Slope y=3x-6 To find the slope first find 2 points. (2, 0) and (0, -6)
Then substitute in and solve

5. Slope Intercept Form
y=mx + b
m is the slope
b is the y-intercept

6. Slope Intercept Form
y=3x-6
The slope is
The y intercept is

7. Slope Intercept Form To graph y=3x-6 Plot (0, -6) then count slope
Up 3 right 1
Connect your points to make a line.

8. Writing an Equation
Write the equation of the line with slope 3/8 and y-intercept 5.
Use slope intercept form: y=mx+b
Substitute in for m and b

9. You Try Write the equation of a line with slope -.5 and y-intercept -3

10. You Try Identify the slope and y intercept. y = -5x + 13 Slope:

11. Writing an Equation Write the equation of the line with slope 2
That passes through pt. (1, 4).
Use slope intercept form: y = mx + b
Substitute in for m
Substitute in your points
values for x and y
Solve for b
Use slope intercept form
and substitute in b and m

12. You Try
Write the equation of a line with slope -3 that passes through pt. (2, 5)

13. Writing an Equation Given 2 Points
Write y=mx+b
Calculate the slope using:
Substitute for m
Substitute one of the given points for x and y
Solve for b
Rewrite the equation using the calculated values for m and b