Mathematics, 13.07.2019 09:30 noglapotato
What is the determinant of the coefficient matrix of this system? 4x-3y=-8 8x-3y=12
Answers: 1
![\left[\begin{array}{cc}\text{x-coefficient, 1st equation}&\text{y-coefficient, 1st equation}\\\text{x-coefficient, 2nd equation}&\text{y-coefficient, 2nd equation} \end{array}\right]](/tpl/images/0084/3047/82ca4.png)
![\left[\begin{array}{cc}4&-3\\8&-3\end{array}\right]](/tpl/images/0084/3047/5de70.png)
![\left | \left[ \begin{array}{cc}a&b\\c&d\end{array}\right]\right | = ad-bc](/tpl/images/0084/3047/170ba.png)
![\left | \left[\begin{array}{cc}4&-3\\8&-3\end{array}\right] \right | = 4(-3) - 8(-3) = -4(-3) = 12](/tpl/images/0084/3047/f3c65.png)
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What is the determinant of the coefficient matrix of this system? 4x-3y=-8 8x-3y=12...
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