Answer:
The right answer is : f(-4)=5
(-9) - (-2) = -7
that should be the answer you subtract
3(x+3)= 8-2x
3x +9 = 8 - 2x
3x + 1 =-2x
1 = -5x
x = -1/5
no
y=-3x+4
x=2y+6
y + 3x =4
-2 + =6
x= 2y +6
y+3.(2y+6)=4
7y = -14
7y=-14
y=-2
y=-2
x=2y+6
x=2(-2)+6=2
solution is {y,x}= {-2,2}