Linear Applications

Create a scatterplot from this data. Write the line of best fit for the data.

• y = 5.02x + 1.82

• y = 8x - 15

• y = 1.82x +5.02

• y = -1.82x +5.02

A man is climbing down from 100 feet high descending 30 feet per minute. Which function models his descent?

• y = 100 - 30x

• y = 100 + 30x

• y = 100x + 30

• y = 100x - 30

Match the graph with the correct equation.

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Using the pictured graph, what is f(-3)? 

• -3

• -1

• 1

• 3

• A

• B

• C

• D

A high school club is researching a tour package offered by the Island Kayak Company. The Company charges $35 per person and $245 for the tour guide. Which function represents the total cost, C (x), of this kayak tour package for x club members?

• C(x) = 35x

• C(x) = 35x + 245

• C(x) = 35(x + 245)

• C(x) = 35 + (x +245)

The volume, V, of liquid in a container after t seconds can be represented by the equation

V = -35t + 1000

The container starts with ​ ​ (a)   amount of liquid in it.

• 1000

• -35

• -1000

• 35

Find f(2)

• f(2) = 0

• f(2) = 1

• f(2) = 3

• f(2) = 4

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 180 pages. 

• 12 chapters

• 15 chapters

• 18 chapters

• 21 chapters

Estimate the correlation coefficient for this scatterplot.

• r = 1.2

• r = 0.89

• r = 0

• r = -0.89