1. Graphing Equations
TeacherTwins©2014

2. Warm Up -1 1 -5 5 2). Write the equation for each table. a). X Y 1 4 2
X Y = 5X X -1 1 -5 5
2). Write the equation for each table.
a). X Y 1 4 2 5 3 6 7
b). X Y 2 1 5 8 3 11
Y = x + 3
Y = 3x+2

3. You get the coordinates by using your x’s and y’s from the table.
When you have an equation in two variables you are able to graph them on a coordinate plane.
You get the coordinates by using your x’s and y’s from the table.
The coordinates you will use to graph the equation on a coordinate plane will be:
( -2, 0) , ( -1, 1), ( 0, 2), (1, 3)
These coordinates are solutions to the equation.
Y = x X Y
-2 0
-1 1
0 2
1 3

4. Plot each point on the graph and connect the points
Plot each point on the graph and connect the points. You will be graphing linear equations which form straight lines.
( -2, 0)
( -1, 1)
( 0, 2)
(1, 3)
This graph only shows 4 ordered pairs, but any solution to the equation y= 2x + 1 will be on this line.

5. X
Y = x + 2 Y
(X , Y) -1
Y = 1
(-1 , 1 )
Y = 0 + 2 2
(0 , 2)
Y = 1 + 2 3
(1 , 3 )
Y = 2 + 2 4
(2 , 4)

6. Find 4 solutions of each equation
Find 4 solutions of each equation. Use the following numbers for x: -1, 0, 1, 2
Example 1: y=2x
Example 2: y=3x+1
Example 3: y= x-2
Example 4: y = 2x - 2
(-1, -2), (0, 0), (1, 2), (2, 4)
( -1, -2), (0, 1), (1, 4), (2, 7)
(-1, -3), (0, -2), (1, -1), (2, 0)
(-1, -4), (0, -2), (1, 0), (2, 2)

7. Graph each of the equations
Graph each of the equations. Use your solutions from the previous problems.
Y = 2x
Y = 3x + 1
Y = x - 2
Y = 2x -2

8. Y = 2x
Y = 3x + 1
Y = x - 2
Y = 2x -2

9. Write each one of your four examples on a flap using a different color
Write each one of your four examples on a flap using a different color. Graph each equation in a different color using the graph provided.
Y = 2x
Y = 3x + 1
Y = 2x -2
Y = x - 2

10. Closure