Discriminant
2 years ago
fhsmathteacher
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12 QuestionsShow answers
  • Question 1
    60 seconds
    Q. The discriminant is
    answer choices
    aX2  + bX  +  c
    b - 4ac
    b2 - 4ac
    b2 + 4ac
  • Question 2
    60 seconds
    Q. ____________
    For the function above, is the discriminant positive, negative, or zero?
    answer choices
    Positive
    Negative
    Zero
    Not Sure
  • Question 3
    60 seconds
    Q. ____________
    For the function above, is the discriminant positive, negative, or zero?
    answer choices
    Positive
    Negative
    Zero
    Not Sure
  • Question 4
    180 seconds
    Q.

    For the function below, is the discriminant positive, negative, or zero?

    ___________

    y = x² + 4x + 4

    answer choices

    Positive

    Negative

    Zero

    Not Sure

  • Question 5
    180 seconds
    Q.

    What is the discriminant of -2x2 − x − 1 = 0

    answer choices

    76

    -7

    9

    none of these

  • Question 6
    180 seconds
    Q.

    What is the discriminant of 6x2 − 2x − 3 = 0

    answer choices

    76

    29

    68

    none of these

  • Question 7
    180 seconds
    Q.

    What is the discriminant for 5x2 + x − 2 = 0

    answer choices

    -39

    42

    -41

    none of these

  • Question 8
    60 seconds
    Q.

    If the discriminant is positive, then the solution will be

    answer choices

    one real solution

    two real solutions

    no real solutions

    one imaginary solution

  • Question 9
    60 seconds
    Q. A function has a discriminant of 25.
    ______________
    How many solutions does it have?
    answer choices
    0
    1
    2
    5
  • Question 10
    60 seconds
    Q. In the equation
    y = x2 +5x +7, match each leading coefficient with its correct letter 
    answer choices
    a=0, b=5, c=7
    a=1, b=5, c=7
    a=7, b=5, c=1
  • Question 11
    60 seconds
    Q.

    Determine the values of

    a, b, and c for

    the quadratic equation:

    4x2 – 8x = 3

    answer choices

    a = 4, b = -8, c = 3

    a = 4, b =-8, c =-3

    a = 4, b = 8, c = 3

    a = 4, b = 8, c = -3

  • Question 12
    300 seconds
    Q. Determine the value of the discriminant and name the nature of the roots for the following:
    x2 + 7x + 13
    Remember:  b2 - 4ac
    answer choices
    400, 2 real root 
    0, 1 real root with a multiplicity of 2
    -400, 2 imaginary roots
    -3, 2 imaginary roots
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