SOLUTION: y=10x+25 and y=5x+40
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Question 291008: y=10x+25 and y=5x+40
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the first equation.
Plug in
Subtract from both sides.
Subtract from both sides.
Combine like terms on the left side.
Combine like terms on the right side.
Divide both sides by to isolate .
Reduce.
Go back to the first equation
Plug in
Multiply
Add.
So the solutions are and which form the ordered pair )
(ie the two graphs intersect at this point).
This means that the system is consistent and independent.
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