3A7 Roots of Quadratic Equations
6th - 9th Grade
•7 Qs
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3A7 Roots of Quadratic Equations
Quiz
•
Mathematics
•
6th - 9th Grade
•
Practice Problem
•
Hard
Jonah Chua
Used 3+ times
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7 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What is the expression for the discriminant of a quadratic function?
b2 + 4ac
b2 - 4bc
b2 - 4ac
b2 + 4bc
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the minimum point of the quadratic function
y = (x - 2)2 + 3
(-2 , 3)
(2 , -3)
(-2 , -3)
(2 , 3)
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Determine the nature of roots for the following equation
y = 2x2 - x + 1
two real and distinct roots
two real and equal roots
two real roots
no real roots
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the conditions required for
ax2 + bx + c to be
always positive?
a > 0 and b2 - 4ac < 0
a > 0 and b2 - 4ac > 0
a < 0 and b2 - 4ac < 0
a < 0 and b2 - 4ac > 0
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
State the maximum value of
-2(x + 3)2 - 17
-3
-6
-17
-34
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
State the coordinates of the turning point of the graph y = 2x2 - 12x + 10
(2 , -6)
(3 , -8)
(6 , 10)
(-1, 24)
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Find the value of k for which the equation 2x2 - 4x + k has two real and equal roots.
k = -2
k = 2
k = -1
k = 1
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