Q:

What is the solution to the system of equations?2x – y = 7y = 2x + 3(2, 3)(2, 7)no solutioninfinite number of solutions

Accepted Solution

A:
Consider
2x – y = 7 y = 2x + 3
Subst. 2x+3 for y in the first equation: 2x - (2x + 3) = 7
This boils down to 0 + 3 = 7, which simply is not true and can never be true.
Thus, this system of equations has no solution.