Asked by anonymous

Solve each system of equation by grpahing?

3. y=-3x+6
2y=10x-36



4. y=-x-9
3y=5x+5
Answered by Steve
#3
since one equation tells us that y = -3x+6, use it in the other equation:

2y = 10x-36
2(-3x+6) = 10x-36
-6x+12 = 10x-36
-16x = -48
x = 3

Do #4 the same way
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