Answer:
1. QR = HI
2. angle W and angle T
3. WB = UV
Step-by-step explanation:
It could me fill in the part of the proof, since I notice on all of them they only mark one or two of the congruencies on the shapes. I'm not really sure of 3's answer.
Hope this helped somewhat and good luck

Value of the coefficient of the

term is
Value of the coefficient of the

term is
Value of the coefficient of the x term is
The value of the constant is
:)
-1+1=0. So your answer is -1 and 1