Question

Which of the options represents the resulting equation after an equivalent expression for y is substituted into the second equation?

1 THROUGH 4 ARE THE ANSWERS

Answer 1

The answer is the forth option

Answer 2

Correct choice is D

Explanation:

Given the system of two equations:

`\left\{\begin{array}{l}4x+y=8\\6x-9y=12\end{array}\right..`

Fro mthe first equation

`y=8-4x.`

Substitute into the second equation
`8-4x` instead of y:

`6x-9(8-4x)=12.`

Note that
`8-4x=-4x+8,` then the second equation will take look

`6x-9(-4x+8)=12.`