PLEASE HELP!!! I will give metal and if u r correct, i will FAN! I don't have much time left.

Question

anonymous · Answer

Select the equations that are parallel and perpendicular to $$Y=\frac{ 1 }{ 4 }X+7$$ and that pass through the point (-8, 9).

solomonzelman · Answer

reverse the slope  saying that if it is  A, then the perp  will be -1/a

Can you write the slope for me?

The write (with whatever A)

y=Ax+  (unknown y-intercept "b")

plug in (-8,9) -8 for x and 9 for y, and solve for y-intercept (knowing the slope from the first step).

solomonzelman · Answer

I am not very good at explaining -:(

anonymous · Answer

slope is 1/4

solomonzelman · Answer

yes, but in your case it would be  $\Large\color{blue}{ \bf   -\frac{1}{\frac{1}{4} }    }$

anonymous · Answer

why?

solomonzelman · Answer

ohh the equations of parallel and perp.  So for the parallel one just say

y=1/4 x  + b  plug in (-8,9) and solve for b

and for the perp one

y= -4 x +b   plug in yur point (the same way) and solve for b

solomonzelman · Answer

Perpendicular slope to slope m is   $\Large\color{blue}{ \bf   -\frac{1}{m}   }$

anonymous · Answer

that is not how i learned it...

solomonzelman · Answer

okay, good. You can do it.... I'll help you more if you need to.

anonymous · Answer

is it 
parallel: $$y=\frac{ 1 }{ 4 }x+11$$
perpendicular: y = -4x - 23

solomonzelman · Answer

yes correct !!

solomonzelman · Answer

Good work

anonymous · Answer

sweet! thx

solomonzelman · Answer

My pleasure !