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Solve. $\newline$ $-4x + 8y = -4$ $\newline$ $x = -1$ $\newline$ (_, _)

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Solve a system of equations using any method

Full solution

Q. Solve.

\newline

-4x + 8y = -4

\newline

x = -1

\newline

(_____, _____)

Substitute $x = -1$ : Substitute $x = -1$ into the equation $–4x + 8y = –4$ . $\newline$ $–4(-1) + 8y = –4$ $\newline$ $4 + 8y = –4$
Isolate variable term: Isolate the variable term $8y$ . $8y = -4 - 4$ $8y = -8$
Solve for y: Solve for y. $\newline$ $8y = -8$ $\newline$ $y = -\frac{8}{8}$ $\newline$ $y = -1$
Find ordered pair: We found: $\newline$ $x = -1$ $\newline$ $y = -1$ $\newline$ What is the solution in the form of an ordered pair? $\newline$ Substitute $x = -1$ and $y = -1$ into $(x, y)$ . $\newline$ The solution is $(-1, -1)$ .

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