SOLUTION: What is the relationship between the lines y=-1/4x+15 and y=4x-17 thank you

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Question 306932: What is the relationship between the lines y=-1/4x+15 and y=4x-17
thank you
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
y=mx+b where m is the slope
if the slopes are equal then they are parallel or the same.
if the product(multiply them together ) is -1 then they are perpendicular.