I am sure but I am going with Property if equation . this is say if x =2 then 2 x y = 2y .
Answer:

Step-by-step explanation:
Since the angles are equal the equation to solve would be:

you will subtract 3x from 5x and get 2x

subtract 20 from 50 to get 30

divide each side by 2


Hope this helps
I’m pretty sure it’s rotate 180 degrees.
Answer:
y = -1/2x +5
Step-by-step explanation:
The perpendicular slope will be the negative reciprocal of the original slope
the reciprocal of 2 is 1/2, and the negative of that is -1/2
So if you take 42/100 you get .42
Then you take .42 and multiply it by 28
Giving you the answer of 11.76