Benchmark 3 8th Grade

Benchmark 3 Review

Functions, Volume, Scatter Plots, and Two-way Tables

Finding the Rate of Change (Slope)

Multiple Choice

What is the slope of the equation y = -3x + 8

• 8

• -3

• No Slope

• Undefined

Multiple Choice

Find the slope of the line.

• -5/4

• 5/4

• -4/5

• 4/5

Multiple Choice

Find the slope from the table.

• -4

• 1

• 4

• -2

Comparing Functions

• Find the Rate of Change (Slope) for each function.

• Find the y-intercept for each function

• See which one is greater or less based on the question.

Which Function has a lower rate of change?

Multiple Choice

Function A is represented by the equation.

Function B is represented by the graph.

Which function has the greater y-intercept?

• Function A

• Function B

• Neither. They have the same y-intercept.

• There is not enough information to answer this question.

Multiple Choice

Who has the greater rate of change?

• Hunter has the greater rate of change.

• Casey has the greater rate of change

• They have the same rate of change

Multiple Choice

Which panda is growing faster?

• Mochi

• Kappa

Multiple Choice

Who is losing weight faster?

• Valerie

• Oscar

• They are losing the same amount of weight

These are all functions

EACH X VALUE (input)

HAS ONLY ONE Y VALUE (output)

These are NOT functions

In each example, there is one X VALUE (input) that has more than one Y VALUE (output)

Multiple Choice

What is the definition of function?

• Has inputs and outputs

• Every input(x) has only ONE output(y)

• Inputs have different outputs every time

• x-values and y-values

Multiple Choice

Is this graph a function or not a function? 

• Function

• Not a Function

Multiple Choice

Is this graph a function or not a function? 

• Function

• Not a Function

Multiple Choice

Is this table a function or not a function? 

• Function

• Not a Function

Multiple Choice

Is this graph a function or not a function? 

• Function

• Not a Function

Multiple Choice

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)

• (3,4) (4,-3) (7,4) (3, 8)

• (6,-5) (7, -3) (8, -1) (9, 1)

• (2, -2) (5, 9) (5, -7) (1, 4)

Multiple Choice

Between which seconds is the line INCREASING?

• Between 7 and 12 seconds

• Between 0 and 1 seconds

• Between 1 and 5.5 seconds

• Between 12 and 13.5 seconds

Multiple Choice

Between which seconds is the line STAYING THE SAME?

• Between 7 and 12 seconds

• Between 0 and 4 seconds

• Between 1 and 5 seconds

• Between 12 and 13.5 seconds

Multiple Choice

Which graph below could match the situation described?

Select a graph for the situation.

You wait for the express bus for 30 minutes, get on and ride the bus non-stop for 3 miles, and then walk another mile to your home.

Multiple Choice

A driver stopped her car for a traffic light. After waiting for the light to turn green, the driver continued on her way. 

• A

• B

• C

• D

Multiple Choice

Which scatter plot shows no relationship?

• Graph A

• Graph B

• Graph C

• Graph D

Multiple Choice

In the scatter plot, does the image shows a "Line of Best Fit"?

• Yes

• No

Multiple Choice

The scatter plot below shows the number of books read by students in Ms. Honor’s English class and their final grades. Which statement represents the best description about the line of best fit or trend?

• The more books students read, the lower their English grade.

• The more books students read, the higher their English grade.

• The fewer books students read, the higher their English grade. 

• No relationship exists between the number of books students read and their English grades. 

Multiple Choice

Which of the following lines represents the line of best fit for the scatter plot?

• A

• B

• C

• D

Multiple Choice

Which of the following lines represents the line of best fit for the scatter plot?

• A

• B

• C

• D

Multiple Choice

Which of the following lines represents the line of best fit for the scatter plot?

• A

• B

• C

• There is no line of best fit for this graph because there is no trend.

Multiple Choice

Which of the following could be a possible line of best fit for the data?

• y = $$-\frac{5}{2}$$ x + 20

• y = -x + 19

• y = x + 20

• y = $$\frac{2}{3}$$ x + 15 

Multiple Choice

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

• 6

• 50

• 55

• 59

Multiple Choice

A teacher made the following graph showing the number of hours that a student studied for an exam versus their exam grade. Use the Line of Best Fit to predict the amount of hours to study to make a grade of 100.

• 2

• 3.5

• 4.5

• 4

Two-Way (Contingency) Table

• Organizes categorical data

• Used to summarize relationships between categorical variables

Multiple Choice

What percentage of the days that it rained, did they forecast no rain?

• About 20%

• About 18%

• About 14%

• About 12%

Multiple Choice

What number should go in the blue box?

• 21

• 135

• 19

• 22

Multiple Choice

How many total have no cell phone?

• 13

• 9

• 22

• 100

Multiple Choice

How many total have an MP3 player?

• 13

• 57

• 70

• 100

Multiple Choice

How many total people were surveyed?

• 78

• 22

• 70

• 100

Labelling

Fill in the missing values.

Drag labels to their correct position on the image

12

3

97

66

131

Multiple Choice

Find the volume of the Cone.

• $$30,520.8\ km^3$$

• $$122,083.2\ km^3$$

Multiple Choice

Find the Volume of the Sphere

• 904.32 ft³

• 7,234.56 ft³

• 150.72 ft³

Multiple Choice

Volume = ?

• 1,077.02 yd³

• 269.255 yd³

• 153.86 yd³