Quadratic Exploration Worksheet With Answer Key Page 9
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12Name: ________________________ Class: ___________________ Date: __________
ID: C
Quadratic Exploration Quiz
Multiple Choice
Identify the choice that best completes the statement or answers the question.
2
1. Find the axis of symmetry of the graph of y = 3x
+ 6x + 4 .
____
a.
x = −1
b.
x = 1
c.
y = 1
d.
y = −1
2
____
2. Tell whether the graph of the quadratic function y = 9x
− 7x + 3 opens upward or downward. Explain.
a.
Because a < 0 , the parabola opens downward.
b.
Because a > 0 , the parabola opens downward.
Because a < 0 , the parabola opens upward.
c.
d.
Because a > 0 , the parabola opens upward.
____
3. Identify the vertex of the parabola. Then give the minimum or maximum value of the function.
a.
The vertex is (5, − 6) , and the minimum is –6.
The vertex is (5, − 6) , and the maximum is 5.
b.
c.
The vertex is (5, − 6) , and the maximum is –6.
d.
The vertex is (5, − 6) , and the minimum is 5.
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