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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

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 class=
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 class=

Respuesta :

frika

Answer:

Correct choice is D

Step-by-step explanation:

Given the system of two equations:

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

Fro mthe first equation

[tex]y=8-4x.[/tex]

Substitute into the second equation [tex]8-4x[/tex] instead of y:

[tex]6x-9(8-4x)=12.[/tex]

Note that [tex]8-4x=-4x+8,[/tex] then the second equation will take look

[tex]6x-9(-4x+8)=12.[/tex]

jaekmc

Answer:

The answer is the forth option

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