AnswersAlgebra IISquare Root Functions and Equations

Practice Test Answers

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1
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Which equation is the inverse of y is equal to x squared minus 36 ?

A
y is equal to plus or minus square root of x plus 36 end root - correct
B
y is equal to plus or minus square root of x squared plus 36 end root - no response given
C
y is equal to plus or minus square root of x plus 36 - no response given
D
y is equal to plus or minus square root of x plus 6 - no response given
3
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Which equation is the inverse of y is equal to 7 x squared minus 10 ?

A
y is equal to plus or minus square root of x over 7 plus 10 end root - no response given
B
y is equal to the fraction with numerator plus or minus square root of x and denominator 7 plus or minus the fraction with numerator square root of 10 and denominator 7 - no response given
C
\(y=\frac{\pm\sqrt{x\ +\ 10}}{7}\) - no response given
D
\(y=\pm\sqrt{\frac{x\ +\ 10}{7}}\) - correct
4

What is the solution of square root of x minus 4 end root plus 5 is equal to 2 ?

A
x is equal to negative 17 - no response given
B
x is equal to 13 - no response given
C
x is equal to 53 - no response given
D
no solution - correct
5

What is the solution of 4 plus square root of 5 x plus 66 end root is equal to x plus 10 ?

A
x is equal to negative 10 - no response given
B
x is equal to 3 - not selected, this is the correct answer
C
x is equal to negative 10 or x is equal to 3 - no response given
D
no solution - incorrect
6

Which graph represents y is equal to cube root of x plus 2 ?

A
image with description A coordinate plane with a horizontal x-axis and a vertical y-axis, both axes labeled from negative 8 to 8 by twos with grid lines every 1 unit. An S-shaped curve crosses the vertical axis at 0 comma negative 2 and crosses the horizontal axis at 8 comma 0. The curve extends to the left ending in an arrow near negative 9 comma negative 4, and extends to the right ending in an arrow near 9 comma 0.3. - incorrect
B
image with description A coordinate plane with a horizontal x-axis and a vertical y-axis, both axes labeled from negative 8 to 8 by twos with grid lines every 1 unit. An S-shaped curve crosses the horizontal axis at negative 2 comma 0 and crosses the vertical axis near 0 comma 1.3. The curve extends to the left ending in an arrow near negative 9 comma negative 1.5, and extends to the right ending in an arrow near 9 comma 2.2. - no response given
C
image with description On a coordinate plane x and y axes range from negative 9 to 9 in increments of 1. A graph of cubic function passes through points (negative 8 comma 0), (0 comma 2), and (8 comma 4). The curve has a point of inflection at (0 comma 2). - not selected, this is the correct answer
D
image with description A coordinate plane with a horizontal x-axis and a vertical y-axis, both axes labeled from negative 8 to 8 by twos with grid lines every 1 unit. An S-shaped curve crosses the horizontal axis at 2 comma 0 and crosses the vertical axis near 0 comma negative 1.3. The curve extends to the left ending in an arrow near negative 9 comma negative 2.2, and extends to the right ending in an arrow near 9 comma 2. - no response given

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