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Question 9 - Week 1 Practice | Prasnya
Q9
00:00
13 Jul 2025
Q9.
Let
x
1
x_1
x
1
be the price of
1
1
1
pencil and
x
2
x_2
x
2
be the price of
1
1
1
pen. Choose the correct option.
@passage
A
The matrix representation to find
x
1
x_1
x
1
and
x
2
x_2
x
2
is
[
2
b
3
6
]
[
x
1
x
2
]
=
[
a
10
]
\begin{bmatrix}2&b\\3&6\end{bmatrix}\begin{bmatrix}x_1\\x_2\end{bmatrix}=\begin{bmatrix}a\\10\end{bmatrix}
[
2
3
b
6
]
[
x
1
x
2
]
=
[
a
10
]
.
B
The matrix representation to find
x
1
x_1
x
1
and
x
2
x_2
x
2
is
[
2
3
b
6
]
[
x
1
x
2
]
=
[
a
10
]
\begin{bmatrix}2&3\\b&6\end{bmatrix}\begin{bmatrix}x_1\\x_2\end{bmatrix}=\begin{bmatrix}a\\10\end{bmatrix}
[
2
b
3
6
]
[
x
1
x
2
]
=
[
a
10
]
.
C
The system of equations
2
x
1
+
6
x
2
=
a
2x_1+6x_2=a
2
x
1
+
6
x
2
=
a
and
b
x
1
+
3
x
2
=
10
bx_1+3x_2=10
b
x
1
+
3
x
2
=
10
represents the given problem.
D
The system of equations
2
x
1
+
b
x
2
=
a
2x_1+bx_2=a
2
x
1
+
b
x
2
=
a
and
3
x
1
+
6
x
2
=
10
3x_1+6x_2=10
3
x
1
+
6
x
2
=
10
represents the given problem.
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Q9
00:00
13 Jul 2025
Q9.
Let
x
1
x_1
x
1
be the price of
1
1
1
pencil and
x
2
x_2
x
2
be the price of
1
1
1
pen. Choose the correct option.
@passage
A
The matrix representation to find
x
1
x_1
x
1
and
x
2
x_2
x
2
is
[
2
b
3
6
]
[
x
1
x
2
]
=
[
a
10
]
\begin{bmatrix}2&b\\3&6\end{bmatrix}\begin{bmatrix}x_1\\x_2\end{bmatrix}=\begin{bmatrix}a\\10\end{bmatrix}
[
2
3
b
6
]
[
x
1
x
2
]
=
[
a
10
]
.
B
The matrix representation to find
x
1
x_1
x
1
and
x
2
x_2
x
2
is
[
2
3
b
6
]
[
x
1
x
2
]
=
[
a
10
]
\begin{bmatrix}2&3\\b&6\end{bmatrix}\begin{bmatrix}x_1\\x_2\end{bmatrix}=\begin{bmatrix}a\\10\end{bmatrix}
[
2
b
3
6
]
[
x
1
x
2
]
=
[
a
10
]
.
C
The system of equations
2
x
1
+
6
x
2
=
a
2x_1+6x_2=a
2
x
1
+
6
x
2
=
a
and
b
x
1
+
3
x
2
=
10
bx_1+3x_2=10
b
x
1
+
3
x
2
=
10
represents the given problem.
D
The system of equations
2
x
1
+
b
x
2
=
a
2x_1+bx_2=a
2
x
1
+
b
x
2
=
a
and
3
x
1
+
6
x
2
=
10
3x_1+6x_2=10
3
x
1
+
6
x
2
=
10
represents the given problem.
Save
Read
Check
Details
