Answer:
-4
Step-by-step explanation:
If a = -4 then you can eliminate hte -4x and 4x by adding them, you get 0x, so you eliminate the x variable
Answer:
multiply one or both of the equations until a variable can cancel out
Answer:
C. Im pretty sure
Step-by-step explanation:
Cause if it starts off on the positive x axis and it switched from positive to negative that means its a reflection and then b+3 means the y axis shifted up 3 units
X=1
12(1)=6(1)+6
12=6+6
12=12 Check :)