Question

HELP PLEASE.

Which pair of equations are perpendicular lines?
A.
5x + 2y = 9 and y =-5/2x+27/2
B.
x – 3y = 11 and y = –3x + 23
C.
4x + 2y = 6 and y = –2x + 18
D.
x – 3y = 5 and y = 3x – 11

Answer 1

C

Explanation:

because all of then dont make sense at all only C

Answer 2

the answer is
B. x – 3y = 11 and y = –3x + 23 In the future I recommend you use Desmos graphing calculator.