Quiz about Grade 8 Math Review

Question 1

True or False:

A triangle with side lengths 3, 4, and 5 is a right triangle

Accepted Answer

True

Answer

False

Question 2

True or False:

A triangle with side lengths 6, 12, and 13 is a right triangle.

Accepted Answer

False

Answer

True

Question 3

Translations, reflections and rotations are all known as ________________________.

Accepted Answer

Transformations

Answer

Geometry

Answer

Congruent

Answer

Shapes

Question 4

Name the transformation.

Accepted Answer

Reflection

Answer

Translation

Answer

Rotation

Answer

Dilation

Question 5

When you translate, you ______ a number to x and y.

Accepted Answer

Add or subtract

Answer

Multiply or divide

Answer

Add or multiply

Answer

Subtract or divide

Question 6

Translations are always _______

Accepted Answer

Congruent

Answer

Bigger

Answer

Smaller

Answer

Rotated

Question 7

When you reflect a shape, you ______ over an axis or line.

Accepted Answer

Flip

Answer

Rotate

Answer

Slide

Answer

Expand

Question 8

Identify the transformation from ABC to A'B'C'.

Accepted Answer

Reflection across the x-axis

Answer

Rotate 90^o clockwise

Answer

Rotate 90^o counter clockwise

Answer

Reflection across the y-axis

Question 9

Identify the transformation from ABCD to A'B'C'D'.

Accepted Answer

Translation

Answer

Reflection across the y-axis

Answer

Reflection across the x-axis

Answer

Rotate 90^o counter clockwise

Question 10

Point (-5,2) is reflected over the y axis.  Where is the new point located?

Accepted Answer

(5,2)

Answer

(-5,-2)

Answer

(-5,2)

Answer

(5,-2)

Question 11

Point (7,2) is translated up 2 units and left 5 units.  Where is the new point located?

Accepted Answer

(2,4)

Answer

(9,-3)

Answer

(2,0)

Answer

12,4)

Question 12

Apply the following rule to the point (-5,6):
(x,y)-->(y,-x)

Accepted Answer

(6,5)

Answer

(-5,-6)

Answer

(5,-6)

Answer

(-6,5)

Question 13

Determine where X' would be if you translated X 3 units to the left and 9 units down.

Accepted Answer

(-4, -5)

Answer

(-4, 4)

Answer

(-10, 2)

Answer

(-1, 5)

Question 14

The result of a transformation.

Accepted Answer

Image

Answer

Pre-image

Question 15

Reflect Point C over the y-axis:

Accepted Answer

(-3, 2)

Answer

(3,2)

Answer

(-2,3)

Answer

(3,0)

Question 16

Reflections over the x-axis change the ____-__________.

Accepted Answer

y-coordinate

Answer

x-coordinate

Answer

no coordinate

Answer

both coordinate

Question 17

The original figure prior to a transformation.

Accepted Answer

Pre-image

Answer

Image

Answer

shape

Answer

transformation

Question 18

Is the picture being reflected in the y-axis or x-axis?

Accepted Answer

y-axis

Answer

x-axis

Answer

None, this is a translation

Answer

None, this is a rotation

Question 19

Identify the transformation from A to D.

Accepted Answer

Rotate 90^o Clockwise

Answer

180^o Rotation

Answer

270^o Clockwise Rotation

Answer

360^o Rotation

Question 20

When you translate, you are simply _______ the shape around the coordinate plane.

Accepted Answer

Sliding

Answer

Rotating

Answer

Reflecting

Answer

Expanding

Question 21

Going from (x,y) to (-y,x) will result in a counter-clockwise rotation of _____ degrees.

Accepted Answer

90

Answer

180

Answer

270

Answer

360

Question 22

Rotate the point (7,8) around the origin 90 degrees counterclockwise. State the image of the point.

Accepted Answer

(-8,7)

Answer

(-7,-8)

Answer

(8,-7)

Answer

(8,7)

Question 23

If point P(2, -3) is rotated 180 degrees around the origin, then the image is at

Accepted Answer

(-2, 3)

Answer

(-2, -3)

Answer

(3, -2)

Answer

(-3, -2)

Question 24

What is the slope-intercept form of the equation of a line?

Accepted Answer

y=mx+b

Answer

y=yx+b

Answer

x=yx+b

Answer

x=xy+b

Question 25

What does the b mean in y=mx+b?

Accepted Answer

y-intercept

Answer

Slope

Answer

Nothing

Answer

x-intercept

Question 26

How do you calculate slope using a graph?

Accepted Answer

rise over run

Answer

run over rise

Answer

look at the y intercept

Answer

look at the x intercept

Question 27

What does "m" stand for in the slope formula?

Accepted Answer

slope

Answer

y axis

Answer

y coordinate

Answer

x coordinate

Question 28

In the equation y=mx+b, what does the m represent?

Accepted Answer

slope

Answer

y-intercept

Answer

linear

Answer

point-slope

Question 29

Find the slope

Accepted Answer

-5/3

Answer

-3/5

Answer

5/3

Answer

3/5

Question 30

Find the slope:

Accepted Answer

4/3

Answer

3/4

Answer

-3/4

Answer

-4/3

Question 31

Find the slope of the line.

Accepted Answer

-1

Answer

-2

Answer

2

Answer

1

Question 32

Find the slope of the line that passes through:
(6,7) and (4,2)

Accepted Answer

5/2

Answer

2/5

Answer

-5/2

Answer

-1/2

Question 33

Find the slope of the line that passes through:
(2, 4) and (6, 12)

Accepted Answer

2

Answer

1/2

Answer

-1/2

Answer

-2

Question 34

Find the slope of the line that passes through:
(10, 1) and (5, 2)

Accepted Answer

-1/5

Answer

1/5

Answer

5

Answer

-5

Question 35

What is the slope represented in the table?

Accepted Answer

slope: $$2$$

Answer

slope: $$\frac{1}{2}$$

Answer

slope: $$-\frac{1}{2}$$

Answer

slope: $$-2$$

Question 36

If m=3 and b=6, what is the correct slope intercept equation?

Accepted Answer

y=3x+6

Answer

y=3-6

Answer

y=3x-6

Answer

y=6x+3

Question 37

What is the slope of the line with the equation
$$y\ =\ -\frac{3}{2}x\ +\ 4$$

Accepted Answer

$$-\frac{3}{2}$$

Answer

$$\frac{3}{2}$$

Answer

$$4$$

Answer

$$-4$$

Question 38

What is the y-intercept of the line with the equation
$$y\ =\ -2x\ +\ 4$$

Accepted Answer

$$4$$

Answer

$$-2$$

Answer

$$2$$

Answer

$$-4$$

Question 39

Write a linear equation in slope intercept form of a line with a slope of 12 and y intercept of 10

Accepted Answer

y=12x+10

Answer

y=12x-10

Answer

y=10x+12

Answer

x=10x-12

Question 40

Write a linear equation in slope intercept form of a line with a slope of -3 and y intercept of 0

Accepted Answer

y=-3x

Answer

y=-3

Answer

y=3x

Answer

x=-3

Question 41

Graph the line with the equation
$$y\ =\ -\frac{2}{3}x\ +\ 4$$

Accepted Answer

Option D is correct

Answer

A.

Answer

B.

Answer

C.

Question 42

Graph the line with the equation
$$y\ =\ -\frac{1}{3}x\ -\ 4$$

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

Answer

D.

Question 43

This is found by subtracting the data values from the mean and finding the absolute value.

Accepted Answer

Absolute Deviation

Answer

Absolute Value

Answer

Mean

Answer

M.A.D.

Question 44

Another word for variability.

Accepted Answer

Spread

Answer

Consistency

Answer

Scatterplot

Answer

Distance

Question 45

How much distance or space there is in a data set.

Accepted Answer

Variability

Answer

Consistency

Answer

Inconsistency

Answer

Scatterplot

Question 46

This shows the type of relationship between two things.

Accepted Answer

Correlation

Answer

Mean Absolute Deviation

Answer

Trend Line

Answer

Consistency

Question 47

What is the third step when calculating Mean Absolute Deviation?

Accepted Answer

Find the mean of the absolute deviations.

Answer

Find the mean.

Answer

Find the absolute deviations or distances from the mean.

Answer

Find the absolute Value.

Question 48

A graph that shows the relationship between two sets of data graphed as ordered pairs.

Accepted Answer

Scatter Plot

Answer

Dot Plot

Answer

Line Graph

Answer

Correlation

Question 49

Which is the correct way to draw a trend line on a scatterplot?

Accepted Answer

Following the trend, with the same number of points above as below.

Answer

Following the trend, by connecting the points given.

Answer

Just above the given data.

Answer

Just below the given data.

Question 50

What is Mean Absolute Deviation?

Accepted Answer

The average distance of a data's values from the mean

Answer

The average distance the data is from 0

Answer

Absolute Value

Answer

Distance

Question 51

What is the first step when calculating Mean Absolute Deviation?

Accepted Answer

Find the mean.

Answer

Find the absolute deviations or distances from the mean.

Answer

Find the mean of the absolute deviations.

Answer

Find the absolute Value.

Question 52

What is the second step when calculating Mean Absolute Deviation?

Accepted Answer

Find the absolute deviations or distances from the mean.

Answer

Find the mean.

Answer

Find the mean of the absolute deviations.

Answer

Find the absolute Value.

Question 53

Make a prediction for a resting heart rate after 6 hours of exercise a week.

Accepted Answer

55

Answer

6

Answer

50

Answer

80

Question 54

Which describes the scatterplot?

Accepted Answer

As speed increases, distance increases.

Answer

As speed increases distance decreases.

Answer

As speed decreases distance increases.

Question 55

Which M.A.D. would show the most variability?

Accepted Answer

2

Answer

.5

Answer

1

Answer

1.5

Question 56

Which M.A.D. would show the most consistency?

Accepted Answer

.5

Answer

1

Answer

1.5

Answer

2

Question 57

Which could be two points on the trend line?

Accepted Answer

(0, 40) and (5, 80)

Answer

(1,40) and (6, 80)

Answer

(0, 0) and (5, 100)

Answer

(0, 0) and (5, 80)

Question 58

Given the points (0, 16) and (2, 20) write an equation for the line.

Accepted Answer

y = 2x + 16

Answer

y=1/2x + 16

Answer

y= 1/2x - 16

Answer

y = 2x - 16

Question 59

If a trend line has an equation y = 12x + 13 make a prediction when x = 9.5

Accepted Answer

127

Answer

25

Answer

34.5

Answer

121

Question 60

Which is the correct data set for the dot plot?

Accepted Answer

1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 7, 9

Answer

1, 2, 3, 4, 5, 6, 7, 8, 9,

Answer

1, 2, 3, 4, 5, 7, 9

Question 61

Amelie is comparing two data sets. Data set A has a mean absolute deviation of 4.5 and data set B has a mean absolute deviation of 9.9. What conclusion can Amelie make about the two data sets?

Accepted Answer

The data in set A is less spread out than the data in set B.

Answer

The average of set A is less than the average of set B.

Answer

The data in set A is more spread out that the data in set B.

Question 62

What is the mean absolute deviation for the data set below? Round your answer to the nearest tenths. {24, 45, 54, 35, 25, 37, 31, 29}

Accepted Answer

7.8

Answer

35.0

Answer

8.5

Answer

7.1

Question 63

10 = s - 12

Accepted Answer

s = 22

Answer

s = 2

Answer

s = -2

Answer

s = -22

Question 64

Question 64.

Accepted Answer

b = 8

Answer

b = 2

Answer

b = -8

Answer

b = -2

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