Math 8 Functions Unit Sample Test (eMath - Unit 6)

• 1

• 2

• 3

• 0

The graph below shows a function. Which of the following is not in the range of the function?

• 0

• 2

• -2

• 9

Which table could represent a linear function?

• Table (1)

• Table (2)

• Table (3)

• Table (4)

After traveling for 50 miles, Ivy gets on the highway and continues traveling at a constant rate of 65 miles per hour. Which function below describes Ivy’s distance traveled, d, as a function of the amount of time, t, in hours that she has been traveling on the highway?

Niki is keeping track of the total amount of snow that fell at her house during a blizzard. The table below shows how the total is a function of the time since the blizzard started. Which of the following gives the average rate that the snow has increased from 8 to 24 hours?

• 0.7 inches per hour

• 1.3 inches per hour

• 1.5 inches per hour

• 2.2 inches per hour

Each scatter plot below shows the same set of data. Which choice has the most appropriate best fit line drawn for this data set?

• Option 1

• Option 2

• Option 3

• Option 4

In the context of the scatter plots, what does a best fit line represent?

• The exact values of the data points

• An average trend of the data

• The maximum values of the data

• The minimum values of the data

• 0.11 pounds

• 1 pound

• 2.3 pounds

• 0.5 pounds

Fill in the blank: In a linear equation y = mx + b, m represents the ____.

• y-intercept

• slope

• x-intercept

• constant term

Fill in the blank: In the equation y = 2.3x + 0.11, the term 0.11 represents the ____.

• y-intercept/starting value

• slope/rate of change