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0
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Juan solves the system of equations by forming a matrix equation.

−4x+y=9

3x+2y=7

He multiplies the left side of the coefficient matrix by the inverse matrix.

How does he proceed to the solution?

Drag the choices to correctly complete Juan's process.

Dec 19, 2019

#1
+120
0

In the first blank spot goes

$$\Big\lbrack \begin{matrix} 9\\ 7 \end{matrix} \Big \rbrack$$

In the second blank spot goes

$$-\frac{1}{11} \bigg \lbrack \begin{matrix} 2 &-1\\ -3 &-4 \end{matrix} \bigg\rbrack$$

In the third blank box place

$$-\frac{1}{11} \bigg\lbrack \begin{matrix} 11\\ -55 \end{matrix} \bigg\rbrack$$

and into the last empty box drag

$$\bigg\lbrack \begin{matrix} -1\\ 5 \end{matrix} \bigg\rbrack$$

Hope this helps you.

Dec 20, 2019