Quadratic Equations and Simultaneous Equations MCQs - Math Test 8

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

1. x = 3, y = 4, z = 5
2. x = 5, y = 4, z = 3
3. x = 4, y = 5, z = 3
4. x = 3, y = 5, z = 4

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

1. x = 1, y = 21, z = 11
2. x = 11, y = 1, z = 21
3. x = 1, y = 11, z = 21
4. x = 21, y = 11, z = 1

MCQ: Solve equations: 2x² + y² = 600, 3xy = 600

1. x = 10, y = 20
2. x = 20, y = 10
3. x = -10, y = -20
4. x = -20, y = -10

MCQ: Value of b² - 4ac determines nature of roots, for real and different roots, b² - 4ac is:

1. lesser than 0
2. equal to 0
3. greater than 0
4. None of the above

MCQ: Value of b² - 4ac determines nature of roots, for real and equal roots, b² - 4ac is:

1. lesser than 0
2. equal to 0
3. greater than 0
4. None of the above