7. What is the value of h in the quadratic function y = x² - 8x - 13 when written on vertex form?
A. - 29
B. - 13
c. - 4
D. 4

8. Which is the following quadratic functions will have a value of b = 0 when written in standard form?
A. y = 2(x-5)²
B. y = - 3(x + 1/6)² - 12
C. y + 3( 5x² - 2) = (3x + 4)(3x - 4)
D. 7x(3x - 5) - 2(1 - 4x²) =y

9. The quadratic function y = 4x² + 2x - 9, when transformed into the form f(x) = a(x-h)² + k, is equal to which of the following functions?
A. f(x) =4(x + 1/2)²-10
B. f(x) =4(x + 2)² - 35/2
C. f(x) =4(x + 1/2)² - 36
D. f(x) =4(x + 1/4)² - 37/4

10. What is the vertex of the quadratic function f(x) = -x² - 2x - 3?
A. (-1,-2)
B.(-2,-1)
C.(-1,2)
D.(2,1)

11. What is the opening of the graph of the quadratic function f(x) = -x² - 2x - 3?
A. downward
B. opens to the right
C. upward
D. opens to the left

12. What is the equation of the axis of symmetry of the parabola of the graph of the quadratic function f(x) = - x² - 2x - 3?
A. x = 2
B. x = - 2
C. x = 1
D. x = - 1

13. What is the y-intercept of the quadratic function f(x) = -x² - 2x - 3?
A. - 1
B. - 2
C. - 3
D. 3

14. What is the vertex of the quadratic function f(x) =2x² + 4x - 3?
A. (1,-5)
B.(-1,5)
C.(-1,-5)
D.(1,5)

15. What is the equation of the axis of symmetry of the parabola of the graph of the quadratic function f(x) = 2x² + 4x - 3?
A.1
B.-1
C.5
D.-5
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