Question

If $D_y=-15$ and $D=-5$ are the values of the determinants for certain simultaneous equations in $x$ and $y$, find $y$.

• A. 0
• B. 1
• C. 2
• D. 3

Answer 1

The correct option is D 3

Given, $D_y=-15,D=-5$

We know, $y=\frac{D_y}{D}$

$\Rightarrow y=\frac{-15}{-5}=3$

Therefore, the value of $y$ is $3$.