1. Section 4.2 Graphing Linear Equations Using Tables
Wednesday 11/13/13
Class Notes

2. Type 1
Let m=2, 6m+2=14 true?
Let x=2, y=3 4x+y=11 true?
What does this ordered pair (2,3) represent?

3. Important Definitions
Coordinate plane: ________________________________________
_____________________________________________________
Each point on the plane corresponds to an ____________ _________
of numbers, __________
The x-axis and y-axis divide the
coordinate plane into four quadrants:

4. RECALL: How to graph ordered pairs (x,y)
“Walk before you run!!”

5. What does a line represent?
What is this line made up of?

6. Use the graph to determine if the following points are solutions:
(1,5)
(-3,3)

7. How to justify your answer WITHOUT a graph:
_________________________________________
a) (1,5)
b) (-3,3)

8. 3 steps for Using a Table to Graph an Equation
Step 1: Solve for y & write as f(x)=mx+b
Step 2: Choose values for x, and use your function to fill out the table
Step 3: Plot the coordinate pairs (points).
A line going through these points is a graph of all possible solutions for this equations

9. Use a table of values to graph the equation y+2=3x Step 1:
Example:
Use a table of values to graph the equation y+2=3x
Step 1:
Step 2:

10. (example cont.)
Step 3:
Coordinate pairs found
from the table in step 2

11. Use a table of values to graph the equation 3x-2y=6 Step 1:
YOUR TURN TO TRY!! 
Use a table of values to graph the equation 3x-2y=6
Step 1:
Step 2:

12. (example cont.)
Step 3:
Coordinate pairs found
from the table in step 2