krissywatts
passing through (4,2) and perpendicular to x=5/4y2. Write in slope intercept form.
For my answer i have y=4/5x+6/5 is this correct?



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krissywatts
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@jim_thompson5910

jim_thompson5910
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x=5/4y2
x+2=5/4y
5/4y = x+2
y = 4/5x + 2(4/5)
y = 4/5x + 8/5

jim_thompson5910
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the slope of y = 4/5x + 8/5 is 4/5
so the slope of x=5/4y2 is also 4/5

jim_thompson5910
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the perpendicular slope would be 5/4 because you flip the fraction and the sign of 4/5

jim_thompson5910
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so your answer will have a slope of 5/4 not 4/5

krissywatts
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the original slope was 5/4 not 4/5

jim_thompson5910
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you first need to solve for y to get the slope

jim_thompson5910
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5/4 is not the original slope

krissywatts
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soo it would then be 4/5 for perp wouldn't it?

jim_thompson5910
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5/4 for the perp

jim_thompson5910
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4/5 is the original slope

krissywatts
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okay