SOLUTION: solve the system by substitution method. if unique solutions doesn't exist, state whether the system is inconsistent or dependent.
5x+y=8 -4x-4y=-16
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5x+y=8 -4x-4y=-16
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Question 126052: solve the system by substitution method. if unique solutions doesn't exist, state whether the system is inconsistent or dependent.
5x+y=8 -4x-4y=-16 Answer by checkley71(8403) (Show Source):
You can put this solution on YOUR website! 5X+Y=8 OR Y=8-5X NOW SUBSTITUTE
-4X-4(8-5X)=-16
-4X-32+20X=-16
16X=-16+32
16X=16
X=16/16
X=1 ANSWER.
Y=8-5*1
Y=8-5
Y=3 ANSWER.
PROOF
5*1+3=8
5+3=8
8=8
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