Solve the system of equations by graphing:
{
y
=
−
2
x
+
4
x
+
2
y
=
−
4
\displaystyle {\left\lbrace\begin{array}{c} {y}=-{2}{x}+{4}\\{x}+{2}{y}=-{4}\end{array}\right.}
{
y
=
−
2
x
+
4
x
+
2
y
=
−
4
Solution =
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