SOLUTION: could you please help me find the slope of a line that is perpendicular to the line 5x-7y=28 thank you

Question 647770: could you please help me find the slope of a line that is perpendicular to the line 5x-7y=28
thank you
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Solve for y

5x-7y=28

-7y=-5x + 28

y=(-5x + 28)/(-7)

y = (-5x)/(-7) + (28)/(-7)

y = (5/7)x - 4

So the slope is 5/7

Flip the fraction and flip the sign to get the final answer of -7/5

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