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

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Presentation on theme: "1.9 Patterns, Equations, and Graphs. A solution of an equation with two variables x and y is any ordered pair ( x,y) that makes the equation true."— Presentation transcript:

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?  y= 4x 10= 4 x 3 10≠12 so this is not a solution Substitute the value of the variables into he equation

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

5 How old is Ty if Bea is 51? Use a table to represent each relationship: Ty is 3 years younger than Bea. TyBea

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


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