Posted by **zach w** on Friday, November 30, 2012 at 11:56pm.

perpendicular to line -2x+y=7 contains the point (-4,-2) the equation of line is

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**Steve**, Saturday, December 1, 2012 at 12:06am
-2x+y=7 can be written as

y=2x+7, so we see it has slope=2

so, the perpendicular has slope -1/2

now you have a point and a slope:

y+2 = -1/2 (x+4)

and you can massage that as you will.

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**zach w**, Saturday, December 1, 2012 at 12:36am
6x+2y=12

find intercept

a circle equation x^2+y^2+4x-4y-1=0 and graph

2)find domain and range f(x)=x^2-4x-5

find vertex of f(x) =x^2+4x-21

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