Question 1

Which ordered pairs cause this relation NOT to be a function? Why?
           {(0, 0.5), (0.5, 1), (3, 1), (1, 6), (3, 2)}

Accepted Answer

(3, 1) and (3, 2); The same x-value has different y-values.

Answer

(3, 1) and (3, 2); The x-value in a function cannot be greater than the y-value.

Answer

(0.5, 1), (3, 1); The same y-value has different x-values.

Answer

(0.5, 1) and (0, 0.5); A function cannot contain decimals.

Question 2

The graph shows the dilation of ΔABC with the origin as its center. Which rule describes this transformation?

Accepted Answer

(x, y) → (2x, 2y)

Answer

(x, y) → (0.5x, 0.5y)

Answer

(x, y) → (x + 2, y +2)

Answer

(x, y) → (x + 2, y +2)

Question 3

Consider the two functions shown here. Which function grows faster for large positive values of x? [Note: Function 1 is shown in the graph.]

Accepted Answer

Function 2, because the y-values increase faster than the y-values in function 1.

Answer

Function 2, because all the range values of the function are positive.

Answer

Function 1, because it has larger x values than function 2.

Answer

Function 1, because the y-value for x = 1 is greater in function 1.

Question 4

Which statement about the system of equations is true?

Accepted Answer

The system has exactly 1 solution.

Answer

The system has no solutions.

Answer

The system has no solutions.

Answer

The system has exactly 2 solutions.

Question 5

Object A and Object B are two objects in motion. Given the graph of Object A and the 
equation y = 5/2x of Object B, which 
of the two moving objects has 
greater speed and by what factor? 
(round to nearest hundredth)

Accepted Answer

Object B by a factor of 1.56

Answer

Object B by a factor of 1.99

Answer

Object A by a factor of 1.99

Answer

Object A by a factor of 1.56

Question 6

Scientists believe there is a link between ambient temperature and damage to a head gasket 
on a car. Using the provided information, 
draw a scatterplot of the data. Based on the
 information, what might the approximate 
damage index be if the temperature was 
10° Celsius?

Accepted Answer

13

Answer

7

Answer

10

Answer

5

Question 7

The coordinates of ΔABC are (-3, 4), (0, 4), and (2, 5). The coordinates of ΔA'B'C' are (-1.5, 2), (0, 2) and (1, 2.5). How do you know that the transformation is a dilation?

Accepted Answer

The coordinates of ΔABC have been multiplied by a scale factor of 0.5.

Answer

The coordinates of ΔABC have been divided by ½.

Answer

The coordinates of ΔABC have been multiplied by a scale factor of 2.

Answer

The signs of the coordinates of ΔABC have remained the same.

Question 8

The pitch of a roof is found the same way as the slope of a line. What is the pitch of a roof that has a height of 9 ft and a horizontal run of 7?

Accepted Answer

9/7

Answer

½

Answer

⅔

Answer

3/2

Question 9

Solve: 5x - 7x + 6 = -2(x - 3).

Accepted Answer

Infinitely many solutions

Answer

0

Answer

¾

Answer

2

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