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Quadratic Functions
Test Description: Quadratic Functions
Instructions: Answer all questions to get your test result.
1) When does a quadratic function have 2 real solutions?
A
Never
B
When the discriminant is greater than 0
C
When the discriminant is equal to 0
D
When the discriminant is less than 0
2) When does a quadratic function have 1 real solution?
A
Never
B
When the discriminant is equal to 0
C
When the discriminant is less than 0
D
When the discriminant is greater than 0
3) When does a quadratic function have 0 real solutions (2 complex)?
A
When the discriminant is equal to 0
B
When the discriminant is less than 0
C
Never
D
When the discriminant is greater than 0
4) When does the graph of the quadratic open upwards?
A
Never
B
When a is zero
C
When a is positive
D
When a is negative
5) When does the graph of a quadratic open downwards?
A
When a is positive
B
When a is negative
C
Never
D
When a is zero
6) When does a quadratic function have a maximum?
A
When a is positve
B
Never
C
When the graph opens downwards
D
When the graph opens upwards
7) When does a quadratic function have a minimum?
A
When a is negative
B
When the graph opens upwards
C
Both answers 1 and 3 are correct
D
When a is positive
8) What is the equation of the axis of symmetry of a quadratic function?
A
x = b/2a
B
x = -b/2a
C
x = -b/4a
D
b^2-4ac
9) When can a set of data be modeled by a quadratic function?
A
When the first differences are constant
B
When the fourth differences are constant
C
When the second differences are constant
D
When the third differences are constant
10) What is the coordinate of the vertex of a quadratic function?
A
(x, y)
B
(-b/2a, b/2a)
C
(-b/2a, f(-b/2a)
D
(-h,-k)
*select an answer for all questions
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