HELP I GIVE MEDALS!!!

Select the pair of equations whose graphs are perpendicular.
A. 2x – 8y = 9
12x – 3y = 8

B.3x + 6y = 8
y = 2x – 8

C.y = 2x – 7
x + y = 3

D. 2y = –3x + 5
2x + 3y = 4

Question

HELP I GIVE MEDALS!!!

Select the pair of equations whose graphs are perpendicular.  
 A. 2x – 8y = 9
 12x – 3y = 8                                                         

B.3x + 6y = 8
y = 2x – 8

 C.y = 2x – 7
x + y = 3
   
  D. 2y = –3x + 5
 2x + 3y = 4

arabpride · Answer

OK first step, you have to turn alll these equations to look like: y=mx+b

arabpride · Answer

AND!! you have to understand that perpendicular lines will have the same y-intercept....

arabpride · Answer

@crazycocob (understand what im sayin) lol

crazycocob · Answer

I understand the y intercept.... that's about it

arabpride · Answer

lmfao!! ok ok do u know how to change an equation around??

crazycocob · Answer

not really

crazycocob · Answer

do you have to do reverse operation?

arabpride · Answer

no...this is how it works//// ill change option A for u so u can see what im tryin to explain...

crazycocob · Answer

ok thank you

arabpride · Answer

|dw:1389632609526:dw|
Thats how u can turn all ur equations into y=mx+b form