Square Root Functions — Unit test Answers
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1
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Which function represents the following graph?
A
y = StartRoot x minus 3 EndRoot + 3
B
y = StartRoot x + 3 EndRoot + 3
C
y = RootIndex 3 StartRoot x minus 3 EndRoot + 3
D
y = RootIndex 3 StartRoot x + 3 EndRoot + 3
2
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Which function has a domain of and a range of ?
A
y = StartRoot x minus 5 EndRoot + 3
B
y = StartRoot x + 5 EndRoot minus 3
C
y = negative StartRoot x minus 5 EndRoot + 3
D
y = negative StartRoot x + 5 EndRoot minus 3
3
Which graph represents ?
A
On a coordinate plane, a cubic function has an inflection point at (0, negative 2).
B
On a coordinate plane, a cubic function has an inflection point at (negative 2, 0)
C
On a coordinate plane, a cubic function has an inflection point at (0, 2).
D
On a coordinate plane, a cubic function has an inflection point at (2, 0).
4
Which equation is the inverse of y = 7x2 – 10?
A
y = StartFraction plus-or-minus StartRoot x + 10 EndRoot Over 7 EndFraction
B
y = plus-or-minus StartRoot StartFraction x + 10 Over 7 EndFraction EndRoot
C
x = plus-or-minus StartRoot StartFraction x Over 7 EndFraction + 10 EndRoot
D
y = StartFraction plus-or-minus StartRoot x EndRoot Over 7 EndFraction plus-or-minus StartFraction StartRoot 10 EndRoot Over 7 EndFraction
5
Which of the following is the graph of ?
A
On a coordinate plane, an absolute value curve curves up and to the right in quadrant 4 and starts at y = negative 1.
B
On a coordinate plane, an absolute value curve curves up and to the right in quadrant 4 and starts at y = 1.
C
On a coordinate plane, an absolute value curve opens down and to the left in quadrant 2 and starts at y = 1.
D
On a coordinate plane, an absolute value curve opens down and to the left in quadrant 2 and starts at y = negative 1.
6
Which could be the function graphed below?
A
f (x) = StartRoot x minus 5 EndRoot + 1
B
f (x) = StartRoot x minus 2 EndRoot
C
f (x) = StartRoot x EndRoot
D
f (x ) = StartRoot x + 4 EndRoot
7
The graph shows a vertical translation of y = .
A
{y|y < 0}B
{y|y ≥ 0}C
{y|y is a natural number}D
{y|y is a real number}8
Which table represents points on the graph of h(x) = ?
A
A 2-row table has 5 columns. The first row is labeled x with entries negative 8, negative 1, 0, 1, 8. The second row is labeled y with entries 4, 3, 2, 1, 0.
B
A 2-row table has 5 columns. The first row is labeled x with entries negative 2, negative 1, 0, 1, 2. The second row is labeled y with entries 10, 3, 2, 1, negative 6.
C
A 2-row table has 5 columns. The first row is labeled x with entries negative 6, 1, 2, 3, 10. The second row is labeled y with entries 2, 1, 0, negative 1, negative 2.
D
A 2-row table has 5 columns. The first row is labeled x with entries negative 4, negative 3, negative 2, negative 1, 0. The second row is labeled y with entries negative 8, negative 1, 0, 1, 8.
9
Which describes how to graph by transforming the parent function?
A
Reflect the parent function over the y-axis, and translate it 3 units to the right.B
Reflect the parent function over the y-axis, and translate it 3 units to the left.C
Reflect the parent function over the x-axis, and translate it 8 units to the right.D
Reflect the parent function over the x-axis, and translate it 8 units to the left.
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