SOLUTION: Solve the following system of linear equations by graphing: -6x+y=20 -4x+y=12

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: Solve the following system of linear equations by graphing: -6x+y=20 -4x+y=12       Log On


   

Question 322298: Solve the following system of linear equations by graphing: -6x+y=20
-4x+y=12
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
+-6x%2By=20+
y=6x%2B20
Plot it.

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-4x%2By=12+
y=4x%2B12
Plot it too.

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Looks like (-4,-4) is a solution.
Verify using both equations.
-6x%2By=20+
-6%28-4%29%2B%28-4%29=20
24-4=20
20=20
True
-4x%2By=12
-4%28-4%29%2B%28-4%29=12
16-4=12
12=12
True
The ordered pair solves both equations, it's a good solution.