# Quadratic Equations and Simultaneous Equations MCQs - Math Test 8

MCQ. Solve equations: x + 2y = 13, x + y + z = 12, 2y + z = 11

- x = 3, y = 4, z = 5
- x = 5, y = 4, z = 3
- x = 4, y = 5, z = 3
- x = 3, y = 5, z = 4

B

MCQ. Solve equations: x + 2y = 23, x + y + z = 33, x + 2z = 43

- x = 1, y = 21, z = 11
- x = 11, y = 1, z = 21
- x = 1, y = 11, z = 21
- x = 21, y = 11, z = 1

C

MCQ. Solve equations: 2x^{2} + y^{2} = 600, 3xy = 600

- x = 10, y = 20
- x = 20, y = 10
- x = -10, y = -20
- x = -20, y = -10

A

MCQ. Value of b^{2} - 4ac determines nature of roots, for real and different roots, b^{2} - 4ac is:

- lesser than 0
- equal to 0
- greater than 0
- None of above

C

MCQ. Value of b^{2} - 4ac determines nature of roots, for real and equal roots, b^{2} - 4ac is:

- lesser than 0
- equal to 0
- greater than 0
- None of above

B