Precalculus Quiz
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SYSTEMS OF EQUATIONS
Question 1
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Given the matrix equation
(
1
−
4
3
2
)
(
x
y
)
=
(
−
6
5
)
,
\begin{pmatrix}1&-4\\3&2\end{pmatrix}\begin{pmatrix}x\\y\end{pmatrix}=\begin{pmatrix}-6\\5\end{pmatrix},
(
1
3
−
4
2
)
(
x
y
)
=
(
−
6
5
)
,
which system of equations does it represent?
A
{
x
−
4
y
=
−
6
3
x
+
2
y
=
5
\begin{cases} x-4y=-6 \\ 3x+2y=5 \end{cases}
{
x
−
4
y
=
−
6
3
x
+
2
y
=
5
B
{
x
+
4
y
=
−
6
3
x
+
2
y
=
5
\begin{cases} x+4y=-6 \\ 3x+2y=5 \end{cases}
{
x
+
4
y
=
−
6
3
x
+
2
y
=
5
C
{
x
−
4
y
=
5
3
x
+
2
y
=
−
6
\begin{cases} x-4y=5 \\ 3x+2y=-6 \end{cases}
{
x
−
4
y
=
5
3
x
+
2
y
=
−
6
D
{
x
−
3
y
=
−
6
4
x
+
2
y
=
5
\begin{cases} x-3y=-6 \\ 4x+2y=5 \end{cases}
{
x
−
3
y
=
−
6
4
x
+
2
y
=
5
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