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2.5 Class Quiz 5: Identify Identities and find the Unknown Constants.

Quiz by Ms Choi

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10 questions
Show answers
  • Q1

    Which of the following is an identity?

    2x + 6y = 12xy

    2x − 6y = 2(x − 3y)

    2x − 6y = 2(x + 3y)

    2x + 6y = 8xy

    60s
  • Q2

    If3(x - M) ≡ 6Nx - 9, where M and N are constants, find N.     Just type the number.

    Users enter free text
    Type an Answer
    60s
  • Q3

    Which of the following is an identity?

    8x − 4x = 16x − 10x

    4x − 8x = 6x − 10x

    4x + 8x = 6x + 10x

    8x − 4x = 6x − 10x

    60s
  • Q4

    If Ax2 + Bx ≡ 6x2 - 5x, where A and B are constants, find A.  Just type the number.

    Users enter free text
    Type an Answer
    60s
  • Q5

    If  7y - 4= cy + d, where c and d are constants, find c and d.   

    c = 7, d = 4

    c = 4, d = 7

    c = 4, d = −7

    c = 7, d = −4

    60s
  • Q6

    Refer to the picture.

    Question Image

    I and III only

    I, II and III

    II and III only

    I and II only

    120s
  • Q7

    If3(x - M) ≡ 6Nx - 9, where M and N are constants, find M.     Just type the number.

    Users enter free text
    Type an Answer
    60s
  • Q8

    If 5x+ 7 = p + qx, where p and q are constants, find p and q.

    p = 7, q = 5

    p = 5, q = 7

    p = -7, q = -5

    p = -5, q = -7

    60s
  • Q9

    If 3x(x− A) + x ≡ 3x2 − 5x, where A is a constant, find A.

    2

    -2

    -\frac{5}{3}

    \frac{5}{3}

    60s
  • Q10

    If 2x(x− 2A)  ≡ 2x2 − 4x, where A is a constant, find A.

    -2

    1

    2

    -1

    60s

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