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Variables, Coefficients and Constants. First Order Equations with One Variable

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Equations Learning Material
Tutorial IDTitleTutorialVideo
Tutorial		Revision
Notes		Revision
Questions
9.1Variables, Coefficients and Constants. First Order Equations with One Variable

Variables, Coefficients and Constants. First Order Equations with One Variable Revision Questions

1. . Which of the following is NOT a mathematical sentence?

  1. Alex has twice more bitcoins that Barbara
  2. Yesterday I earned $25 more than two days ago
  3. My two siblings have some coins shared between them in equal amounts
  4. Mixing green and blue colours give cyan

Correct Answer: D

2. . Which of the following mathematical sentences is an OPEN sentence?

  1. 2 = 5 - 3
  2. 4x - 1 = 6
  3. 3 - 2x + 4y - 5z2
  4. 5x - 2y = 0

Correct Answer: C

3. . Which of the following IS an equation?

  1. 4 - 12 = 5 - 13
  2. 2 - 4x - 3x + 2
  3. 1 - 32 + 4 · (5 - 2x) + 9
  4. 2x = 3

Correct Answer: D

4. . What is the coefficient of the equation 1 - 2x = 0?

  1. -2
  2. 2
  3. 1/2
  4. - 1/2

Correct Answer: A

5. . What is the constant of the regular form of the equation 1 - 4x = 8?

  1. -4
  2. -7
  3. 0
  4. 4

Correct Answer: B

6. . The regular form of the equation 1 - 4y + 3x = 6 - 4y is

  1. 3x = 5
  2. -4y - 5 = 0
  3. 3x - 5 = 0
  4. 1 - 4y = 3x

Correct Answer: C

7. . Which of the following IS a first - order equation with one variable?

  1. 3x - 1 = 9y - 2
  2. 3 - 6x = 7
  3. 2 - 2x2 = 4x
  4. y = 3x

Correct Answer: B

8. . Which of the following equations can potentially become a first - order equation with one variable?

  1. y2 - 4x = 3 - 2y2
  2. 5 - 4x = 2y - 3x - (2 + x)
  3. y3 - 3y2 - 2(y2 - 1) = 0
  4. xy - 1 = 4

Correct Answer: B

9. . What operations are necessary to turn the first - order equation 1 + 3x = 4 + x into the regular form?

  1. Add 4 to both sides and then subtract x from both sides
  2. Subtract 1 from both sides and then add 3x to both sides
  3. Subtract x from the right side and 1 from the left side
  4. Send 4 on the left and 3x on the right

Correct Answer: C

10. . What is the root of the first - order equation 2 - 3x = 17?

  1. 5
  2. -5
  3. 3
  4. -3

Correct Answer: B

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