SOLUTION: are these line parallel perpendicular or neither? 5x+3y=3 3x-5y=9

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Question 162741: are these line parallel perpendicular or neither?
5x+3y=3
3x-5y=9
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
5x+3y=3
3y=-5x+3 this line has a slope=-5 (red line)
3x-5y=9
-5y=-3x+9
y=-3x/-5+9/-5
y=3x/5-9/5 this line has a slope=-3/5 (green line)
+graph%28+300%2C+300%2C+-10%2C+10%2C+-10%2C+10%2C+-5x+%2B3%2C+3x%2F5+-9%2F5%29+ (graph 300x300 pixels, x from -10 to 10, y from -10 to 10, of TWO functions -5x +3 and 3x/5 -9/5).
These line are neither.