SOLUTION: Solve the following system by substitution 8x-4y=16 y=2x-4

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Question 120679: Solve the following system by substitution
8x-4y=16
y=2x-4
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
8x-4y=16
y=2x-4

Substitute the y of the second equation into the first equation:
8x - 4(2x-4) = 16
8x -8x +16 = 16
16=16

This statement is ALWAYS true! The conclusion is that these are actually the SAME LINE. The solution is the entire line. The system of equations is said to be "dependent."

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