MCQ - 33-8765

Correct Answer: D

Explanation:

To do this problem, all we need to do is put the coefficients for each variable into a matrix. The first column will be x values, 2^nd column will be y values, and 3^rd column will be what the equations are equal to.
It will look like this

${\displaystyle \left[\begin{array}{ccc}{x}_1& y_1& c_1\\ x_2& y_2& c_2\end{array}\right]}$

where x₁,y₁,x₂,y₂ are coefficients of x and y in the first and second equation respectively. c₁,c₂ refer to what the equations are equal to. So after placing the coefficients and what the equations are equal to in a matrix, it will look like the following.

${\displaystyle \left[\begin{array}{ccc}-<!--\; -\; -->14& -<!--\; -\; -->1& -<!--\; -\; -->6\\ 14& 18& 17\end{array}\right]}$