Answer:
Both equations, when we replace the solution, generate identities.
Step-by-step explanation:
We are given the following system:
y = x - 7
y = -4x + 3
We are given the following solution.
(2,-5).
First equation:
We have to show that when x = 2, y = -5. So
y = x - 7
-5 = 2 - 7
-5 = -5
So ok
Second equation
We have to show that when x = 2, y = -5. So
y = -4x + 3
-5 = -4(2) + 3
-5 = -8 + 3
-5 = -5
We generate both identities, so the solution is checked.
