(11,3) Becuase when you plug it in, 11,3 satisfies the equation.
The answer is c. they are indeed vertical angles
The answer is 9. because... (8+9) + 32= 49
-1.25 or -1 1/4 that’s because the dot is in between a half and a whole number so one half divided by two is 1/4
See the attached picture: