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1st Quarterly Examination in Math-9

Quiz by WILLIAM E. FELISILDA

Grade 9
Mathematics
Philippines Curriculum: Grades 1-10

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9 questions
Show answers
  • Q1
    What is a discriminant?
    The discriminant helps tell you the vertex of a quadratic equation.
    The discriminant helps tell you the nature of roots of a quadratic equation.
    discriminant helps tell you the solution of a quadratic equation
    The discriminant helps tell you the trend of the graph of a quadratic equation
    30s
  • Q2
    How do we get the discriminant of quadratic equations?
    By substituting the values a, b and c in .
    By substituting the values a, b and c in .
    By substituting the values a, b and c in
    By substituting the values a, b and c in b2 – 4ac.
    30s
  • Q3
    What is the nature of roots if the discriminant is -3?
    . The roots are real numbers and are equal
    The roots are rational numbers but are not equal.
    The equation has no real roots.
    The roots are irrational number and are not equal
    30s
  • Q4
    What is the discriminant of the quadratic equation 3x2 – 2x + 4 = 0?
    44
    48
    -44
    -48
    30s
  • Q5
    Your classmate says that the quadratic equation 2x2 + 5x – 4 = 0 has two rational and unequal roots because the value of its discriminant is positive. Do you agree with your classmate?
    Yes, because the discriminant is 57
    No, because the discriminant is -7.
    No, because the roots are unequal irrational numbers.
    No, because the roots are equal rational numbers
    30s
  • Q6
    How do we get the sum of the roots of quadratic equations?
    By substituting the values a, b and c in
    By substituting the values a, b and c in
    A. By substituting the values a, b and c in b2 – 4ac.
    By substituting the values a, b and c in .
    30s
  • Q7
    How do we get the product of quadratic equations?
    By substituting the values a, b and c in .
    By substituting the values a, b and c in
    . By substituting the values a, b and c in b2 – 4ac.
    By substituting the values a, b and c in .
    30s
  • Q8
    What is the sum of the roots of 2x2 – 50 = 0?
    0
    5
    -5
    25
    30s
  • Q9
    Your classmate says that the standard form of the quadratic given the roots -3 and 15 is quadratic x2 + 12x – 45. Do you agree with your classmate?
    No, the quadratic equation is x2 – 12x – 45.
    No, the quadratic equation is x2 – 12x + 45
    No, the quadratic equation is x2 + 12x + 45
    Yes, the quadratic equation is x2 + 12x – 45.
    30s

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