Given a Graph
Given an Equation
Given 2 Order Pairs
Method
Method
Method
Put into slope-intercept form
Use the Slope Formula
Count from one point to the next
y  mx  b
Example
Example
3 x  2 y  4
You must get this equation into y  mx  b form
to find the slope.
Subtract 3x from both sides of the equation.
2 y  3 x  4
Divide both sides of the equation by 2.
Counting from one point to another go left 1
unit and go up 2 units.
3
y   x2
2
The coefficient of x is the slope of the
equation.
3
m
2
The slope is negative.
m
m
Rise
2

Run
1
The Academic Support Center at Daytona State College (Math 8 pg 1 of 1)
y 2  y1
x 2  x1
Example
4,  1
and
0, 6
You must first label the x, y coordinates, and
then plug them into the slope formula.
x1 y1 
4,  1
m
m
and
and
x2 y2 
0, 6
y 2  y1
x 2  x1
6   1
7

04
4
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    b

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