Write the equation of the line that is perpendicular to the graph of y=-4x-9, and whose y-intercept is (0,3)

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21-10-2016
Mathematics

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Write the equation of the line that is perpendicular to the graph of y=-4x-9, and whose y-intercept is (0,3)

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linktra linktra · Answer 1 · 2016-10-25T20:38:22+02:00

linktra linktra

25-10-2016

I wrote the equation y=-4x+3. I attached a graph that has the original line (in blue), the point you gave (red dot), and my line (in green) so you can see it.

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apologiabiology apologiabiology · Answer 2 · 2016-10-25T21:31:01+02:00

apologiabiology apologiabiology

25-10-2016

perpendicular has slope that multipies to -1
y=mx+b
m=slope
b=yint

y=-4x-9
slope=-4

-4 times what=-1
1/4

y=1/4x+b
yint=(0,3)
y=1/4x+3

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