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Practice Exam Answers

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1
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A line of best fit for the data is represented by h is equal to negative 21 point 9 6 2 x plus 114 point 6 5 5 Which statement compares the line of best fit with the actual data given by the table?

A
The line of best fit predicts a height of 4 meters greater than the actual height for any time given in the table.
B
According to the line of best fit, the object was dropped from a lower height.
C
The line of best fit correctly predicts that the object reaches a height of 40 meters after 3 point 5 seconds.
D
According to the line of best fit, the object would have hit the ground 0 point 6 seconds later than the actual time the object hit the ground.
2
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How do the areas of the parallelograms compare?

A
The area of parallelogram 1 is equal to the area of parallelogram 2.
B
The area of parallelogram 1 is 2 square units greater than the area of parallelogram 2.
C
The area of parallelogram 1 is 4 square units greater than the area of parallelogram 2.
D
The area of parallelogram 1 is 2 square units less than the area of parallelogram 2.
3

Which best explains whether or not triangle ABC is congruent to triangle LMN ?

A
The figures are not congruent because point cap b corresponds with point cap n and point cap c corresponds with point cap m .
B
The figures are not congruent because there is no rigid transformation or combination of rigid transformations that will map triangle ABC onto triangle LMN .
C
The figures are congruent because a 180 degrees rotation about the origin and then a reflection over the x -axis will map triangle ABC onto triangle LMN .
D
The figures are congruent because a 270 degrees rotation about the origin and then a reflection over the x -axis will map triangle ABC onto triangle LMN .
4

What is the perimeter of parallelogram WXYZ ?

A
22 units
B
16 units
C
square root of 5 plus square root of 17 units
D
2 square root of 5 plus 2 square root of 17 units
5

Which rule describes the composition of transformations that maps triangle ABC to triangle cap A double prime cap b double prime cap c double prime ?

A
r sub x - axis circ cap t sub negative 6 comma negative 2 open paren x comma y close paren
B
cap r sub o comma 90 degrees circ cap t sub negative 6 comma negative 2 open paren x comma y close paren
C
cap t sub negative 6 comma negative 2 circ cap r sub o comma 90 degrees open paren x comma y close paren
D
cap t sub negative 6 comma negative 2 circ r sub x - axis open paren x comma y close paren
6

What is the missing reason in the proof? Statements Reasons 1. line segment ST is the perpendicular bisector of line segment RV 1. given 2. angle STR and angle STV are right angles. 2. def. of perpendicular bisector 3. line segment RS is congruent to line segment VS 3. ? 4. line segment ST is congruent to line segment ST 4 reflexive property 5. triangle RST is congruent to triangle VST 5. HL theorem

A
converse of the perpendicular bisector theorem
B
Pythagorean theorem
C
SSS congruence theorem
D
perpendicular bisector theorem
7

Which is the correct interpretation of the x -intercepts of the function?

A
Their sum is the total number of promo codes the publicist is releasing before the new record.
B
Their difference is the number of days the first promo codes were released before the new record.
C
Their difference is the number of the most promo codes in a single day.
D
Their sum is the total number of days the number of codes increased.
8

Point cap f prime corresponds to

A
point cap e .
B
point cap d .
C
point cap f .
D
point cap e prime .
9

Which rigid transformation would map triangle cap A cap b cap c to triangle cap e cap d cap c ?

A
a reflection across the line containing line segment cap A cap c
B
a rotation about point cap c
C
a reflection across the line containing line segment cap c cap b
D
a rotation about point cap b
10

Which statements are true about the residual plot and the equation for the line of best fit for the data? Choose two correct answers.

A
The equation for the line of best fit is not a good approximation for the data because the points have a curved pattern.
B
The points of the residual plot are spread evenly above and below the x -axis.
C
The residual plot has the pattern of a curve.
D
The residual plot has a linear pattern.
E
The equation for the line of best fit is a good approximation for the data because the points are random, having no pattern.
11

Which statement is true about the given information?

A
angle CED measures 180 degrees .
B
angle CED measures 45 degrees .
C
angle AEC measures 45 degrees .
D
angle AEC measures 90 degrees .
12

Which rule describes the transformation?

A
cap r sub 0 comma 270 degrees
B
cap r sub 0 comma 360 degrees
C
cap r sub 0 comma 90 degrees
D
cap r sub 0 comma 180 degrees
13

Which type of function is represented by the table of values?

A
quadratic
B
exponential
C
square root
D
linear
14

Which statement about the data is true?

A
A value of 0 point 9 is more than 2 standard deviations from the mean.
B
A value of 0 point 7 is within 1 standard deviation of the mean.
C
The mean of the data is greater than 0 point 5 .
D
The data has a standard deviation of 0 point 1 .
15

What are the x -intercepts of the graph of the function f of x is equal to x squared plus 5 x minus 36 ?

A
3 comma 0 and negative 12 comma 0
B
4 comma 0 and negative 9 comma 0
C
negative 4 comma 0 and 9 comma 0
D
negative 3 comma 0 and 12 comma 0
16

The table shows the results of a survey of 400 random people on whether they like liquid soap, bar soap, or both. Types of Soap Liquid Not Liquid Total Bar 200 100 300 Not Bar 80 20 100 Total 280 120 400 Which is the marginal relative frequency for the people who do not like bar soap?

A
300 4 hundredths
B
120 4 hundredths
C
100 4 hundredths
D
280 4 hundredths
17

The data set represents the number of snails that each person counted on a walk after a rainstorm. 12, 13, 22, 16, 6, 10, 13, 14, 12 What is the outlier of the data?

A
15
B
11
C
22
D
6
18

A point has the coordinates open paren m comma 0 close paren and m is not equal to 0 Which reflection of the point will produce an image located at open paren 0 comma negative m close paren ?

A
a reflection of the point across the y -axis
B
a reflection of the point across the x -axis
C
a reflection of the point across the line y is equal to negative x
D
a reflection of the point across the line y is equal to x
19

Which pair of triangles can be proven congruent by SAS?

A
Image with description 2 triangles are shown. They have a common and congruent side and 2 congruent angles. The first triangle is rotated about a shared side to form the second triangle.
B
Image with description 2 triangles are shown. They have 2 congruent sides and a congruent angle. The first triangle is rotated about a point to form the second triangle.
C
Image with description 2 right triangles are shown. They have 2 congruent sides and a congruent angle. The first triangle is reflected across the shared side to form the second triangle.
D
Image with description 2 triangles with identical angle measures are shown. The second triangle is shifted to the right.
20

Consider the quadratic function f of x is equal to 1 fifth x squared minus 5 x plus 12 Which statements are true about the function and its graph? Choose three correct answers.

A
The graph of the function opens down.
B
The value of f of negative 10 is equal to 82 .
C
The graph of the function is a parabola.
D
The graph contains the point 20 comma negative 8 .
E
The graph contains the point 0 comma 0 .

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