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Matrices: Basic (Matrix) Instinct Quiz

Think you’ve got your head wrapped around Matrices? Put your knowledge to the test. Good luck — the Stickman is counting on you!
Q.

For this matrix, the following is true:



e11 = 2
This is a 2 by 2 matrix
Column two is 3 0
D = 5
All of the above
Q. For these equations, the following is true:

3x – 4y = 2

x + 2y = 5



All of the above.
None of the above.
Q. For this matrix, find the determinant:



-16
9
12
6
None of the above
Q. For these equations:

x + 2y = 6

3xy = 2

Which of these is equivalent:



Q. What is the formula to find the determinant of a 2 × 2 matrix?



ab – cd
ad – cb
ad + cb
ab + cd
None of the above
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