SOLUTION: hi, can you please help me on solving systems using substation this is a problem I am having trouble on Y=3x+9 Y=-5x-7

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Question 949871: hi, can you please help me on solving systems using substation this is a problem I am having trouble on
Y=3x+9
Y=-5x-7
Answer by amarjeeth123(570) About Me  (Show Source):
You can put this solution on YOUR website!
Y=3x+9..................equation 1
Y=-5x-7.................equation 2
Substituting 1 in 2 we get,
3x+9=-5x-7
8x=-16
x=-2
y=-6+9=3