Writing Linear Equations from Tables, Graphs, and Scenarios

The table represents some points on the graph of a linear function.

Which function represents this relationship?

Printer ink costs 18.99 per cartridge. The company that sells the ink cartridges charges a flat rate shipping fee of $7.95, no matter the number of cartridges purchased in a single order.

Which linear function models the total cost, t, for a single order of cartridges?

• c = 26.94t

• c = 18.99t + 7.95

• t = 26.94c

• t = 18.99c + 7.95

The graph of a linear function is shown on the grid.

Which function is best represented by this graph?

The table shows the amount of pet food in cups remaining in an automatic feeder as a function of the number of meals the feeder has dispensed.

Based on the table, which function models this situation?

At a restaurant, jars of tomato sauce are stored in boxes in the pantry. Each box contains 8 jars of tomato sauce. A cook uses 2 jars from 1 of the boxes.

Which function shows the relationship between y, the total number of jars of tomato sauce remaining in the pantry and x, the number of boxes in the pantry?

• y = 8x + 6

• y = 8x

• y = 8x - 2

• y = 6x