Choose the equation of the line passing through the point (-3, -1) and perpendicular to y = one halfx + 3.

Question

nnesha · Answer

the equation you have is $$y = \frac{ 1 }{ 2 }x + 3$$
you need perpendicular slope

anonymous · Answer

ERPENDICULAR LINES HAVE THE NEGATIVE RECIPROCAL SLOPES

nnesha · Answer

do you know what is slope of that ^^^^ equation ??

anonymous · Answer

so your slope would be -2

jchick · Answer

No I have no idea what I am doing

jchick · Answer

Ok thanks

anonymous · Answer

now subtitute points: -1=-3*-2+b
b=-1-6=-7

nnesha · Answer

okay so slope intercept form is y =mx+b where m is slope which is always with x 
and b is y-intercept
so what is m in this equation y =1/2x + b ??

anonymous · Answer

y=-2x-7 is final

jchick · Answer

a. y = -2x - 7 	
	b. y = -2x +5 	
	c. y = 2x + 5 	
	d. y = 2x - 7

anonymous · Answer

well you see of course A

nnesha · Answer

@dtuniyants  can you pleases let her/him do this one
at least give him/her chance

nnesha · Answer

its against the coc hope you know it

jchick · Answer

No I just need an explanation

nnesha · Answer

did you really help ?? 
this is not help its ENABLING

jchick · Answer

I do not like anyone's explanation better i just need help

anonymous · Answer

that right

jchick · Answer

I would like to understand @Nnesha

jchick · Answer

you think that i just want the answer no I am on the lesson and I am trying to figure it out

nnesha · Answer

i really don't care about medals if you still want to learn it i would love to explain so you can understand

jchick · Answer

Yes please do

nnesha · Answer

okay good 
so do you know what is slope of $$y = \frac{ 1 }{ 2 }x + 3$$ ??

jchick · Answer

No i don't can you help me I don't know how to find it

nnesha · Answer

slope intercept form is y =mx+b where m is slope which is always with x 
and b is y-intercept
so what is m in this equation y =1/2x + b ??

jchick · Answer

1/2?

nnesha · Answer

yes right

jchick · Answer

What do i do now?

nnesha · Answer

so you need perpendicular slope 
perpendicular lines have negative   reciprocal slopes   
so your slope is 1/2 you have to flop this fraction and change sign

nnesha · Answer

flip**

jchick · Answer

-1/2

jchick · Answer

No sorry -2

nnesha · Answer

yes that's right

nnesha · Answer

now y =mx + b this is slope intercept form replace m by -2|dw:1421687431041:dw|
replace x and y by their values and then solve for b