SOLUTION: Solve the system of equations by graphing. Then classify the system. 6x-y=21 6x=7y=-3

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Solve the system of equations by graphing. Then classify the system. 6x-y=21 6x=7y=-3      Log On


   

Question 375139: Solve the system of equations by graphing. Then classify the system.
6x-y=21
6x=7y=-3
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.6x-y=21
2.6x%2B7y=-3
Subtract eq. 1 from eq. 2,
6x%2B7y-6x%2By=-3-21
8y=-24
highlight%28y=-3%29
Use either equation to solve for x,
6x%2B3=21
6x=18
highlight%28x=3%29