N/A — Exam Answers

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What are the slope and y -intercept of the line represented by the points shown in the table?

A
slope: 2 , y -intercept: 10
B
slope: 5 , y -intercept: negative 20
C
slope: 5 , y -intercept: 10
D
slope: 2 , y -intercept: negative 20
2
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What is the other solution?

A
2
B
negative 6
C
negative 4
D
10
3

Which equation should she use?

A
k is equal to the fraction with numerator P and denominator 2 x squared
B
k is equal to the fraction with numerator 2 P and denominator x squared
C
k is equal to 1 half P x squared
D
k is equal to 2 p x squared
4

Which exponential function is represented by the values in the table?

A
f of x is equal to 3 times open paren 3 to the x th power close paren
B
f of x is equal to 2 times open paren 3 to the x th power close paren
C
f of x is equal to 3 times open paren 2 to the x th power close paren
D
f of x is equal to 2 times open paren 2 to the x th power close paren
6

Which is a reasonable estimate of the constant of variation?

A
4 point 0 0 k w h kWh per day
B
2 point 4 0 k w h kWh per day
C
0 point 2 5 k w h kWh per day
D
0 point 5 0 k w h kWh per day
7

What is the initial value and what does it represent?

A
6 dollars , the cost of the catalog
B
6 dollars , the cost per item
C
4 dollars , the cost per item
D
4 dollars , the cost of the catalog
8

What is the value of f of negative 1 ?

A
f of negative 1 is equal to negative 3
B
f of negative 1 is equal to 6
C
f of negative 1 is equal to 0
D
f of negative 1 is equal to negative 1
9

Which ordered pair needs to be removed in order for the mapping to represent a function?

A
negative 2 comma negative 1
B
3 comma 7
C
negative 3 comma negative 4
D
1 comma negative 3
12

Which equation represents the height, h of t , of the elevator in feet, as a function of t , the number of seconds during which it has been descending?

A
h of t is equal to 5t minus 500
B
h of t is equal to negative 5t minus 500
C
h of t is equal to negative 5t plus 500
D
h of t is equal to 5t plus 500
13

Which best describes why the function is nonlinear?

A
The rate of change between 2 and 3 trees is different than the rate of change between 3 and 4 trees.
B
The rate of change between 2 and 3 trees is different than the rate of change between 3 and 5 trees.
C
The rate of change between 1 and 2 trees is different than the rate of change between 1 and 3 trees.
D
The rate of change between 1 and 2 trees is different than the rate of change between 2 and 3 trees.
14

The perimeter of a rectangular pool is more than 62 meters, and the width is at least 10 meters less than the length. Which system of inequalities represents the possible length in meters, I, and the possible width in meters, w , of the pool?

A
w is less than or equal to 10 minus 1 2 l plus 2 w is greater than or equal to 62
B
w is less than or equal to l minus 10 2 l plus 2 w is greater than or equal to 62
C
w is less than or equal to l minus 10 2 l plus 2 w is greater than 62
D
w is less than or equal to 10 minus l 2 l plus 2 w is greater than 62
17

Which is the graph of the linear inequality 6 x plus 2 y is greater than negative 10 ?

A
Image with description On a coordinate plane, a dashed straight line with negative slope goes through (negative 2 comma 1) and (0 comma negative 5). Everything to the right of the line is shaded.
B
Image with description On a coordinate plane, a dashed straight line with positive slope goes through (0 comma negative 5) and (2 comma 1). Everything to the right of the line is shaded.
C
Image with description On a coordinate plane, a dashed straight line with negative slope goes through (0 comma 5) and (2 comma negative 1). Everything to the right of the line is shaded.
D
Image with description On a coordinate plane, a dashed straight line with negative slope goes through (0 comma 5) and (negative 2 comma negative 1). Everything to the right of the line is shaded.
19

Which statements are true? Choose three correct answers.

A
The line x is equal to 0 is perpendicular to the line y is equal to negative 3 .
B
The equation of the line parallel to the x -axis that passes through the point 2 comma negative 6 is x is equal to 2 .
C
All lines that are parallel to the y -axis are vertical lines.
D
The equation of the line perpendicular to the y -axis that passes through the point negative 5 comma 1 is y is equal to 1 .
E
All lines that are perpendicular to the x -axis have a slope of 0 .

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