SOLUTION: Are the following lines parallel, perpendicular, or neither? L1 with equation x � 5y = 10 L2 with equation 5x + y = 5

SOLUTION: Are the following lines parallel, perpendicular, or neither? L1 with equation x � 5y = 10 L2 with equation 5x + y = 5

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Question 75688: Are the following lines parallel, perpendicular, or neither?
L1 with equation x � 5y = 10
L2 with equation 5x + y = 5

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
First we need to solve both of these equations for y:

Subtract x from both sides
Divide both sides by -5

Subtract 5x from both sides

So we have two equations and with slopes
of and . Since they are the negative inverse of each other (ie where is the perpendicular slope), the two equations are perpendicular.

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