SOLUTION: 1.)Are the lines a 5x+3y=7 and 3x-5y=8 parallel,perpendicular or neither?

Question 908875: 1.)Are the lines a 5x+3y=7 and 3x-5y=8 parallel,perpendicular or neither?
Found 2 solutions by josgarithmetic, richwmiller:
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
REMOVED SOLUTION BECAUSE POSTED CORRECT SOLUTION TO A DIFFERENT QUESTION & DESCRIPTION

------------GOOD SOLUTION---------------

slope is

slope is

Find the product of the two slopes:

and you can plainly see the slopes are negative reciprocals of each other.
This means the two lines are PERPENDICULAR.
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
5x+3y=7

-5/3
-a/b=m
3x-5y=8
-3/-5=3/5
perpendicular
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