Algebra II
posted by Taylor .
Solve the following system. Then explain what your answer means in the context of the problem.
3x+3y=15
x+y=4

Substitute 4y for x in the first equation, and solve for y.
12 3y + 3y = 15
12 = 15, which is impossible.
There is no solution to the the pair of equations. They represent a pair of parallel lines that never intersect.