AnswersMathematics IINonlinear Functions

Practice Test Answers

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Which equation represents the function graphed on the coordinate plane?

A
g of x is equal to start absolute value x plus 4 end absolute value minus 2
B
g of x is equal to start absolute value x minus 4 end absolute value minus 2
C
g of x is equal to start absolute value x minus 2 end absolute value plus 4
D
g of x is equal to start absolute value x minus 2 end absolute value minus 4
3

Which statement accurately compares the functions on the graph?

A
The square root and quadratic function share a minimum.
B
The absolute value and quadratic function share a y -intercept.
C
All of the functions have a maximum.
D
The absolute value and square root function share an x -intercept.
4

Which statements can be used to accurately compare the functions? Choose two correct answers.

A
g of x has the lowest minimum.
B
f of x has the greatest maximum.
C
All three functions have a y -intercept.
D
All three functions have an x -intercept.
E
The domain of all three functions is the same.
5

The graph of f of x is equal to absolute value of x is stretched by a factor of 0 point 3 and translated down 4 units. Which statement about the domain and range of each function is correct?

A
The domain of the transformed function is all real numbers and is, therefore, different from that of the parent function.
B
The domain of the transformed function and the parent function are both all real numbers.
C
The range of the transformed function is all real numbers greater than or equal to 0 and is, therefore, different from that of the parent function.
D
The range of the transformed function and the parent function are both all real numbers greater than or equal to 4 .
6

What is the catering cost for a dinner with 40 guests?

A
700 dollars
B
400 dollars
C
800 dollars
D
600 dollars
7

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 the fraction with numerator x plus 10 and denominator 7 end root
B
y is equal to plus or minus square root of x over 7 plus 10 end root
C
y is equal to the fraction with numerator plus or minus square root of x plus 10 end root and denominator 7
D
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
8

Which function has a simplified base of 4 cube root of 4 ?

A
f of x is equal to 4 times open paren cube root of 16 close paren raised to the 2 x power
B
f of x is equal to 4 times open paren cube root of 64 close paren raised to the 2 x power
C
f of x is equal to 2 times open paren cube root of 64 close paren to the x th power
D
f of x is equal to 2 times open paren cube root of 16 close paren to the x th power
9

f of x is equal to 2 x minus 1 g of x is equal to 7 x minus 12 What is h of x is equal to f of x plus g of x ?

A
h of x is equal to 9 x minus 12
B
h of x is equal to negative 5 x plus 11
C
h of x is equal to 5 x minus 13
D
h of x is equal to 9 x minus 13
10

Which is equivalent to 16 raised to the 3 fourths x power ?

A
4th root of 16 raised to the 3 x power
B
3 x th root of 16 to the 4th power
C
cube root of 16 raised to the 4 x power
D
4 x th root of 16 cubed
11

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
B
y is equal to plus or minus square root of x squared plus 36 end root
C
y is equal to plus or minus square root of x plus 6
D
y is equal to plus or minus square root of x plus 36 end root
12

Which is the graph of the piecewise-function f of x ? f of x is equal to negative x plus 1 when x is less than or equal to 0; f of x is equal to x plus 1 when x is greater than 0

A
Image with description On a coordinate plane, a piecewise function has 2 connecting lines. The first line goes from (negative 4 comma negative 5) up to (1 comma 0). The second line goes from (1 comma 0) down through (4 comma negative 3).
B
Image with description On a coordinate plane, a piecewise function has 2 connecting lines. The first line goes from (4 comma 5) down to (0 comma 1). The second line goes from (0 comma 1 up through (4 comma 5).
C
Image with description On a coordinate plane, a piecewise function has 2 connecting lines. The first line goes from (4 comma 5) down to (1 comma 0). The second line goes from (1 comma 0) up through (4 comma 3).
D
Image with description On a coordinate plane, a piecewise function has 2 connecting lines. The first line goes from (negative 5 comma negative 4) up to (0 comma 1). The second line goes from (0 comma 1) down through (4 comma negative 3).
14

The step function g of x is defined as shown. g of x is equal to negative 3 when x is less than or equal to 0; g of x is equal to 2 when 0 is less than x comma x is less than or equal to 4; g of x is equal to 5 when 4 is less than x comma x is less than or equal to 10 What is the range of g of x ?

A
0 is less than or equal to g of x comma g of x is less than or equal to 10
B
start set 0 comma 4 comma 10 end set
C
start set negative 3 comma 2 comma 5 end set
D
negative 3 is less than or equal to g of x comma g of x is less than or equal to 5
15

Which describes the range of the parent absolute value function?

A
start set y such that y is greater than or equal to 0 end set
B
start set y such that y is an integer end set
C
start set y such that y is a real number end set
D
start set y such that y is less than or equal to 0 end set
17

The graph of f of x is equal to absolute value of x is reflected across the x -axis and translated to the right 6 units. Which statement about the domain and range of each function is correct?

A
The domain of the transformed function is the same as the parent function, but the ranges of the functions are different.
B
Both the domain and range of the transformed function are the same as those of the parent function.
C
The range of the transformed function is the same as the parent function, but the domains of the functions are different.
D
Neither the domain nor the range of the transformed function are the same as those of the parent function.
19

Which statement is true about the functions?

A
The exponential function is generally growing faster than the linear function.
B
The exponential function and the linear function are generally growing at the same rate.
C
The exponential function is generally growing slower than the linear function.
D
The linear function is generally growing faster than the exponential function.

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