1. 1.9 Patterns, Equations, and Graphs

2. A solution of an equation with two variables x and y is any ordered pair ( x,y) that makes the equation true.

3. Is (3,10) a solution of the equation y= 4x?
Substitute the value of the variables into he equation
y= 4x
10= 4 x 3
10≠12 so this is not a solution

4. Is (-2,3) a solution of the equation y= 2x +7?
Substitute the value of the variables into he equation
y= 2x+7
3=2 x -2 +7
3=3 so this is a solution

5. How old is Ty if Bea is 51?
Use a table to represent each relationship:
Ty is 3 years younger than Bea. Ty
Bea 5 8 6 9 7 10 11 12

6. How much does Tom earn for 7 lawns?
Use a table to represent each relationship:
Tom makes $15.00 for each lawn that he mows
lawns $ 1 15 2 30 3 ? 4 5