AnswersTX-Pre-CalculusUnit Test

Unit Test Answers

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1
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The equation of a parabola in standard form is .

A
y = mx + b
B
y = mx² + b
C
y = ax² + bx + c
D
y = a(x – h)² + k
2
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What is the equation for the axis of symmetry of a parabola?

A
Option
B
Option
C
Option
3

The equation of a parabola in vertex form is .

A
y = mx + b
B
y = mx² + b
C
y = ax² + bx + c
D
y = a(x – h)² + k
4

The vertex of the parabola is at the point .

A
(– h, k)
B
(h, – k)
C
(h,k)
5

The direction of the parabola is determined by the value of .

A
a
B
h
C
k
6

If a is positive the graph opens , and if a is negative the graph opens .

A
upward
B
downward
C
to the right
D
to the left
7

If a is positive the graph opens , and if a is negative the graph opens .

A
upward
B
downward
C
to the right
D
to the left

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Unit Test Answers — TX-Pre-Calculus