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Cambridge Mathematics 9: Matrices and transformations (extension)

10 questions with solutions on the Cambridge Mathematics 9 topic: adding and multiplying matrices, determinants, matrices for reflection, rotation and enlargement.

Type the number or choose the right answer. When you finish, click Check answers and see the solutions.

1. (1 2; 3 4) + (2 0; 1 5) = ?

2. 3 · (1 2; 0 −1) = ?

3. (1 2; 3 4) · (5; 6) = ?

4. How many entries does a 2 × 3 matrix have?

5. The determinant of (2 3; 1 4)?

6. Which transformation does the matrix (1 0; 0 −1) give?

7. Which transformation does the matrix (−1 0; 0 −1) give?

8. Which transformation does the matrix (2 0; 0 2) give?

9. (0 −1; 1 0) · (1; 0) = ?

10. The determinant of (3 1; 2 1)?