Which choice is a solution to the system of equations? y=2x-3, y-9=-x

Question

mathmate · Answer

Transform the equations to look like:
$$y=2x-3$$, and 
$$y=-x+9$$
Since the left-hand sides are y, so the right-hand sides must equal, so you can solve the system by "comparison":
$$2x-3=-x+9$$
and solve for x (and hence y).

anonymous · Answer

the choices are : A. (-3, 12)
B. (4,5)    C. (5,4)   D. ( 12, -3)

mathmate · Answer

If you solved the last equation I posted, you would have found your choice (or not even need choices!)

precal · Answer

The solution is also, the point of intersection.  You can graph these 2 lines and the cross point is your solution.  You can also, sub your multiple choice in one by one.  It has to be true for both statements.  (-3, 12) means x=-3 and y=12 and they cross in Quadrant II