7. What is the nature of the roots of the quadratic equation if the value of its discriminant is zero?
a. The roots are not real
c. The roots are irrational and not equal
b. The roots are rational and not equal
d. The roots are rational and equal

8. What is the sum of the roots of a quadratic equation x
x2+ 4x - 3 = 0?
a. 4
b. -4
c. 3
d. -3

9. Which of the following quadratic equations has the roots -2 and 7?.
a. x2 + 5x + 14 = 0
c. x2 - 5x - 14 = 0
b. x2 + 9x - 14 = 0
d. x2 + 9x + 14 = 0

10. What is the product of the roots of a transformable quadratic equation x = 4/x + 3?
a. 4
b. -4
c. 3
d. -3

11. Which of the following rational algebraic equations is transformable into a quadratic equation?
a. w + 1 / 2 - w+2 / 4 = 7
b. 2w - 1 / 3 + 1 / 2 = 3w / 4
c. 2 / w + 3 / w + 1 = 5
d. 3 / w - 2 + 4 / w + 2 = 7 / w

12. Which of the following mathematical statements is a quadratic inequality?
a. x2 + 9x + 14 = 0
c. x2 - 5x - 24 < 0
b. 2y - 8 = 0
d. 9y + 14 > 0

13. Which of the following points is a solution of the inequality y < 2x2 + 3x - 5?
a. A (1,8)
b. B (3,6)
c. C (-3,4)
d. D (-5, 10)

14. The statements below are examples of situations that can be modeled by quadratic functions EXCEPT
a. throwing a ball
b. hitting a golf ball
c. diving from a platform
d. cellphone load expenditure​