Quadratic Exploration Worksheet With Answer Key Page 3
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12ID: A
Quadratic Exploration Quiz
Answer Section
MULTIPLE CHOICE
1. ANS: B
2
Check that the function is in standard form.
y = −x
− 10x + 1
a = −1
Identify the value of a.
Since a < 0 , the parabola opens downward.
Feedback
To determine the direction the parabola opens, find the value of a in the standard form
A
of the equation.
Correct!
B
If a > 0, the parabola opens upward. If a < 0, the parabola opens downward.
C
If a > 0, the parabola opens upward. If a < 0, the parabola opens downward.
D
PTS: 1
DIF: Average
REF: Page 592
OBJ: 9-1.3 Identifying the Direction of a Parabola
NAT: 12.5.1.e
STA: 8.G.21
TOP: 9-1 Identifying Quadratic Functions
2. ANS: B
The vertex is the highest or lowest point on the parabola. If a parabola opens upward, the vertex is the lowest
point. If a parabola opens downward, the vertex is the highest point. The maximum or minimum value is the
y-value of the vertex.
Feedback
The maximum or minimum value is the y-value of the vertex.
A
Correct!
B
The maximum or minimum value is the y-value of the vertex.
C
If a parabola opens upward, then there is a minimum value. If a parabola opens
D
downward, then there is a maximum value.
PTS: 1
DIF: Average
REF: Page 592
OBJ: 9-1.4 Identifying the Vertex and the Minimum or Maximum
NAT: 12.5.4.c
STA: A.G.10
TOP: 9-1 Identifying Quadratic Functions
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