Question

The answer to 11 is perpendicular and the answer to 12 is parallel but I want to know how to get to that answer​

Answer 1

Answer:

11.

10x+4y=-4 as y=Mx+b.      y=−5/2x−1

8x-20y=60 as y=Mx+b.   y=2/5x−3

12.

x-y=9       y=x-9

7x+7y=35.    Y=-x+5

Step-by-step explanation: