Just wanted to check my answers. I got

Question 1: Find the vertex of the parabola f(x) = x2 - 4x + 4. Circle the correct choice A. (2, 0) B. (4, 0) C. (2, -2) D. (1, -1) Question 2: Find the vertex of the parabola f(x) = -x2 - 4x + 1. Circle the correct choice A. (0, 5) B. (2, 4) C. (-2, 5) D. (-2, -4) Question 3: Find the minimum value of the parabola f(x) = 3x2 - 6x + 5. Circle the correct choice A. -2 B. 2 C. 0 D. -6 Question 4: Find the maximum value of the parabola f(x) = -x2 - 2x + 9. Circle the correct choice A. -1 B. 3 C. 7 D. 10Question 5: Find a quadratic parabola which has its vertex at the point (0,-4) and which passes through the point (-2, 0). Circle the correct choice A. 2x2 - 4x B. x2 - 4 C. x2 - 4x + 4 D. x2+ 2x + 2