Algebra questions need help

label Algebra
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I will find an equation for a parallel and a perpendicular line given set equations and ordered pairs. 

Being that my first name begins with an S, my given equation fit my parallel line is
y=-1/2x+1. I must find a lately line that goes through the ordered pair (4,2).
Feb 2nd, 2015

y=-1/2x+1

parallel line gradient=-1/2

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

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

-x+4=2y-4

-x-8=2y

y=-1/2x-4

perpendicular line

m1*m2=-1

m2=2

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

2(x-4)=y-2

2x-8=y-2

y=2x-6

Feb 2nd, 2015

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Feb 2nd, 2015
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Feb 2nd, 2015
Jun 26th, 2017
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