Solve the system by the method of elimination

Question

anonymous · Answer

attachment

anonymous · Answer

answer choices:
a. (-8,-4)
b. (31,-1)
c. (-4,-8)
d. (36+5a,a) (dependent)
e. inconsistent

hero · Answer

Well, in this case to save time, substitute the answer choices into the problem directly to see which is correct.

hero · Answer

First eliminate what we know isn't correct. There is no a variable, so it can't possibly be d

hero · Answer

Try substituting the answer choices for a, b, and c

hero · Answer

Or you can try using substitution method to see if that will help.

hero · Answer

I wouldn't even try doing the elimination method for this. It is unnecessary. Whoever wrote this problem...I won't even say what I think they should do to themselves.