Hi um I think you posted a picture of something else other than the question!!
So basically to estimate your answer, you must
They are parallel. the second one is just translated up by 5.
The answer is
y= - x-9/3 I believe.
1- Subtract 9 from both sides.
-3y = x - 9
2- Divide both sides by -3
y = - x-9/3
boy or an A student is
29 made an A + 8 boys who did not make an A
37 who made an A and/or who is a boy
37/50