Unit Test — Unit test Answers
25 verified answers
21
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Which graph represents ?
A
On a coordinate plane, a parabola with a vertex at (0, 0) opens up.
B
On a coordinate plane, a curve that begins at (0, 0) opens down and to the right in quadrant 1.
C
On a coordinate plane, a cubic function is vertical and goes through (0, 0).
D
On a coordinate plane, a cubic function is horizontal and goes through (0, 0).
22
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Which equation is equivalent to ?
A
x + 9 = x + 10B
x + 9 = x2 + 20x + 100C
x2 + 81 = x2 + 100D
x2 + 81 = x2 + 20x + 10023
What is the domain of the function ?
A
Negative infinity less-than x less-than infinity
B
0 less-than-or-equal-to x less-than infinity
C
3 less-than-or-equal-to x less-than infinity
D
6 less-than-or-equal-to x less-than infinity
24
Which equation can be simplified to find the inverse of y = x2 – 7?
A
x = y squared minus one-seventh
B
StartFraction 1 Over x EndFraction = y squared minus 7
C
x = y2 – 7D
–x = y2 – 725
What is the domain of the function ?
A
Negative infinity less-than x less-than infinity
B
Negative 4 less-than-or-equal-to x less-than infinity
C
0 less-than-or-equal-to x less-than infinity
D
4 less-than-or-equal-to x less-than infinity
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