Which equation has a graph perpendicular to the graph of 7x = 14y - 8 ?

Question

caroline1218 · Answer

y=-2x-7
y=-1/2x+4
y=1/2x+1
y=2x+9

caroline1218 · Answer

@imqwerty @nincompoop @pooja195 @Thadds2003

thadds2003 · Answer

Okay, to the first item, you need to know the way to build a line equation with the slope and a point.

caroline1218 · Answer

@Thadds2003 So then y = 1/2x + 4/7

caroline1218 · Answer

@Thadds2003

thadds2003 · Answer

Yes, im pretty sure.

thadds2003 · Answer

Sorry I cant help any longer, I got to go.

caroline1218 · Answer

Ok

caroline1218 · Answer

@Decarr432 Do you know which equation is perpendicular to y=1/2x+4/7 ?

decarr432 · Answer

I normally use a graphing calculator sorry I won't be of any help to learn

lynfran · Answer

we first find he slope of the given line 7x=14y-8

caroline1218 · Answer

I believe the answer is A. Is this correct?

lynfran · Answer

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=??

lynfran · Answer

yes ur answer choice is correct

caroline1218 · Answer

Ok, thanks :)