Note that two matrices are said to be equal if they have the same order, and their corresponding elements are also the same.
Given that,
[tex]\begin{bmatrix}{4} & {3} & {} \\ {-1} & 2{} & {}{}\end{bmatrix}=\begin{bmatrix}{4} & {y} & {} \\ {x} & 2{} & {}{}\end{bmatrix}[/tex]
Compare the corresponding terms to get,
[tex]\begin{gathered} x=-1 \\ y=3 \end{gathered}[/tex]
Thus, the first option is the correct choice.
