-2x+9. just distribute a -1
Answer:
a. 
Step-by-step explanation:

4(3h-4)
12h-16?
I don't think that is right, I was kinda guessing
Answer:
(-4,-19)
Step-by-step explanation:
Substitute the points into the equation and see if it is true
y = 4x-3
-3 = 4(4) -3
-3 = 16-3
-3 = 13 false
-19 = 4(-4) -3
-19 = -16-3
-19 -19 true