Question

Plzzzzzz help Solve the system by Substitution.

x−4y=−7

−x+2y=3

A(1, 3)

B(1, 2)

C(-1, -3)

D(1, -3)

Answer 1

B

Both systems can be sloved by susbituding (1,2)

Explanation:

(1)- x−4y=−7

Substitute in the x and y values: 1 - 4 (2) = -7

Multiply the numbers : 1 - 8 = -7

Calculate the difference: -7 = -7

(2) - −x+2y=3

Substitute in the x and y values: -1 + 2 (2) = 3

Multiply the numbers : -1 + 4 = 3

Calculate the sum: 3 = 3