A) \[x=-2,\,y=1\]
B) \[x=-9,y=10\]
C) \[x=22,y=1\]
D) \[x=2,y=-1\]
Correct Answer: A
Solution :
Given that, \[x\left[ \begin{matrix} -3 \\ 4 \\ \end{matrix} \right]+y\left[ \begin{matrix} 4 \\ 3 \\ \end{matrix} \right]=\left[ \begin{matrix} 10 \\ -5 \\ \end{matrix} \right]\] \[\therefore \] \[-3x+4y=10\] ?.(i) and \[4x+3y=-5\] ?.(ii) On multiplying Eq. (i) by 4 and Eq. (ii) by 4 and then subtracting, we get \[-25x=50\] \[\Rightarrow \] \[x=-2\]You need to login to perform this action.
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