
Understanding Quadratic Functions and Parabolas

Interactive Video
•
Mathematics
•
8th - 10th Grade
•
Hard
Standards-aligned

Mia Campbell
FREE Resource
Standards-aligned
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What shape does the graph of a quadratic function form?
A straight line
A parabola
An ellipse
A circle
Tags
CCSS.HSF-IF.C.7A
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the coefficient A in a quadratic function is negative, in which direction does the parabola open?
Downward
Upward
To the left
To the right
Tags
CCSS.HSF-IF.C.7A
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the width of a parabola if the absolute value of A is less than one?
It becomes a straight line
It remains the same
It becomes wider
It becomes narrower
Tags
CCSS.HSF-IF.C.7A
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it beneficial to select x-values that are multiples of three when plotting points for the function f(x) = -1/3x^2 + 3x - 2?
To find the vertex
To avoid fractional y-values
To make calculations easier
To ensure symmetry
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the y-coordinate of the vertex if the x-coordinate is 4.5 for the function f(x) = -1/3x^2 + 3x - 2?
4.75
3.5
5
4.5
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula to find the x-coordinate of the vertex of a parabola?
x = -B/2A
x = -C/2A
x = B/2A
x = C/2A
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which point on the graph of a parabola is known as the vertical intercept?
(0, y)
(0, 0)
(x, 0)
(x, y)
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