Which equation has a graph perpendicular to the graph of 7x = 14y - 8 ?
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OpenStudy (caroline1218):
y=-2x-7
y=-1/2x+4
y=1/2x+1
y=2x+9
OpenStudy (caroline1218):
@imqwerty @nincompoop @pooja195 @Thadds2003
OpenStudy (thadds2003):
Okay, to the first item, you need to know the way to build a line equation with the slope and a point.
OpenStudy (caroline1218):
@Thadds2003 So then y = 1/2x + 4/7
OpenStudy (caroline1218):
@Thadds2003
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OpenStudy (thadds2003):
Yes, im pretty sure.
OpenStudy (thadds2003):
Sorry I cant help any longer, I got to go.
OpenStudy (caroline1218):
Ok
OpenStudy (caroline1218):
@Decarr432 Do you know which equation is perpendicular to y=1/2x+4/7 ?
OpenStudy (decarr432):
I normally use a graphing calculator sorry I won't be of any help to learn
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OpenStudy (lynfran):
we first find he slope of the given line 7x=14y-8
OpenStudy (caroline1218):
I believe the answer is A. Is this correct?
OpenStudy (lynfran):
14y-7x-8=0
solve for y we get
14y=7x+8
y=(7/14)x+8/14
which reduce to.
y=1/2x+8/14
so the equation of the line is in the form y=mx+b
where m=slope
our slope is 1/2
to find its perpendicular slope, the product of the two slopes must equals -i
m*m1=-1
(1/2)*m1=-1
m1=??