Answer:
1.
A=-6,-2 Q 3
B=3,1 Q 1
C=-3,4 Q 2
D=5,-3 Q 4
E=0,-6 Q 4
F=-4,0 Q 2
G=0,2 Q 1
H=7,0 Q 1
2. See 2nd pic
3. (6,0)
Explanation:
1. See the first pic
2. Second pic
3.
2a-4b=12 Try the first set of pairs
2(1)-4(-3)=12 (2*1)-(4*-3)=12
2-(-12)=12 2-(-12)=14 This is incorrect
Now the second pair
2(0)-4(-1)=12
0-(-4)=12 This is incorrect
Next...
2(6)-4(0)=12
12-0=12 Yay! Its correct!
P.S I know the second pic is very blurry and I apologize, I couldn't show you how with a different graph