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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

B

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

C

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

A

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 above

C

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 above

B