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# Parallel and Perpendicular lines confusing?!?

are y=5/7x-1 and y= -5/7x+9 parallel or perpendicular???

In order for it to be parallel, does it have to have the same EXACT slope, signs and everything? And in order for it to be perpendicular, does the signs matter at all? They both have the same slope so Im assuming its parallel?

### 1 Answer

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- 10 years agoBest Answer
For two lines to be parallel, the slope has to be the same as of the original equation; but the y- intercept can be different.

For two lines to be perpendicular the slope has to be a negative reciprocal of the original equation; but the y-intercept can be different.

These 2 lines are not parallel or perpendicular.

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