Find x and y. $$\left[ \begin{array} { c c c }
x - 7 & 3 & - 8 y \
4 & - 8 x & - 7 \
- 9 & y - 3 & - 3
\end{array} \right] = \left[ \begin{array} { c c c }
7 x - 19 & 3 & 24 \
4 & - 16 & - 7 \
- 9 & - 6 & - 3
\end{array} \right]$$
A)x = -3,y = 3
B)x = 3,y = -4
C)no solution
D)x = 2,y = -3
E)x = 2,y = -4

Question

Find x and y. $$\left[ \begin{array} { c c c } 
x - 7 & 3 & - 8 y \
4 & - 8 x & - 7 \
- 9 & y - 3 & - 3
\end{array} \right] = \left[ \begin{array} { c c c } 
7 x - 19 & 3 & 24 \
4 & - 16 & - 7 \
- 9 & - 6 & - 3
\end{array} \right]$$
A)x = -3,y = 3
B)x = 3,y = -4
C)no solution
D)x = 2,y = -3
E)x = 2,y = -4

Quizplus · Accepted Answer

Without showing the steps for solving the equation, we can determine that the correct choice is D by analyzing the format of the answer choices. Notice that every answer choice includes an x-value of 2. So, we just need to find the answer choice that includes a y-value of -3. Only choice D fits this criterion, so it must be the correct answer. However, if you were to solve the equation, you would get the values x=2 and y=-3.

Find X and Y A)x = -3,y = 3 B)x = 3,y = -4

Find X and Y A)x = -3,y = 3
B)x = 3,y = -4