Question

Use substitution to solve the linear system of equations.y = x - 22x + 4 = y1. (-6,8)2. (6,8)3. (-6,-8)4 .(6,-8)

Answer 1

To solve the linear system of equations given, let's substitute y = x - 2 to 2x + 4 = 7.

We get,

$\text{ 2x + 4 = y}$$\text{ 2x + 4 = x - 2}$

By applying the Inverse Property of Addition,

$\text{ 2x + 4 - x -4 = x - 2 - 4 - x}$$\text{ x = }-6$

Let find the value of y by substituting x = -6 to y = x - 2.

$\text{ y = x - 2 }\rightarrow\text{ y = (-6) - 2}$$\text{ y = -8}$

Therefore, the answer is No. 3 - (-6,-8).