Question

Can anybody help me please

Answer 1

no, yes, yes.

Explanation:

See how it says that x=9. if you have two numbers in parenthesis the first number is always x.

So since the other two have 9 as the first number those are yes.

(x, y)

(1, 9)=no

(9, 2)=yes

(9, -1)=yes.