SOLUTION: y=-2x+5 and y=1/2x indicate if each pair of lines is parallel, perpendicular, or neither.

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Question 248566: y=-2x+5 and y=1/2x indicate if each pair of lines is parallel, perpendicular, or neither.
Answer by oberobic(2304) About Me  (Show Source):
You can put this solution on YOUR website!
The two equations are:
y=-2x+%2B+5
y+=+%281%2F2%29x
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For lines to parallel thus must have the same slope.
Perpendicular lines have slopes that are the negative inverse of each other.
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The negative inverse of -2 is 1/2, so it appears these lines are perpendicular.
.
We can graph them as:
%0D%0Agraph%28500%2C500%2C-10%2C10%2C-10%2C10%2C-2%2Ax%2B5%2C+1%2F2%2Ax%29%0D%0A