Question

Solve the following system of equations by substitution and select the correct answer below:

4x - 6y = 28
8x - 4y = 24 (

5 points)
a x = 1, y = -4
b x = 1, y = 4
c x = -1, y = -4
d x = -1, y = 4

Answer 1

A

Explanation:

Start with variable x.
4x - 6y = 28
Substitute the variables for numbers.
4(1) - 6(-4) = 28
Solve the new equation
4 + -24 = 28

Move to the second equation with variable y.
8x - 4y = 24
Substitute variables
8(1) - 4(-4) = 24
Solve
8 - (-16) = 24

The answer is A, x = 1, y = -4