Question

Show that the system has no solution.
x + 2y = -4
y = -1/2x - 4

Answer 1

Explanation:

TO show that this system has no solution, use the y value in the second equation and put it in for y in the first. Then solve.

x + 2y = -4

x + 2(-1/2x - 4) = -4

x - x - 8 = -4

-8 = -4

Because this is an incorrect statement, we can tell there is no solution.