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P-1 Linear Equations in Two Variables — Maths STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10MathsP-1 Linear Equations in Two Variables1 Mark
MCQ
To solve x + y = 3; 3x–2y – 4 = 0 by determinant method find D.
  • A
    5
  • B
    1
  • C
    -5
  • D
    -1
✓

Answer

$\begin{aligned} & x+y=3 \\ & 3 x-2 y=4 \\ & D=\left[\begin{array}{cc}1 & 1 \\ 3 & -2\end{array}\right]=(1 \times-2)-(1 \times 3)=-2-3=-5\end{aligned}$
Hence, Option C is correct.

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