Answer:
No, (2, 5) is not a solution to this system
Step-by-step explanation:
x + 2y = 4 keep the same
x - y = -5 Multiply by 2
x + 2y = 4
+ 2x - 2y = -10
3x = -6
x = -2
Substitute x = -2 into equation 1 and solve for y
x + 2y = 4
-2 + 2y = 4 Solution is (-2, 3)
2y = 4+ 2
2y = 6 y = 3
Test point (2, 5)
x + 2y = 4 x - y = -5
2 + 2(5) = 4 2 -(5) = -5
2 + 10 = 4 -3 = -5 Not true
12 = 4 Not true
