Aquarium
Student Hiking
Printer Assembly
Car Mileage
Savings Account
A 160 liter aquarium must be drained.
| Point | Water in Tank (liters) | Time (min) | Change in Water | Change in Time |
| 1 | 160 | 0 | --- | --- |
| 2 | 145 | 1 | -15 | 1 |
| 3 | 115 | 3 | -30 | 2 |
| 4 | 70 | 6 | -45 | 3 |
| 5 | 40 | 8 | -30 | 2 |
| 6 | 10 | 10 | -30 | 2 |
This table represents a linear function because the slope is -15, which is consistent from point to point.
A student is hiking 25 miles.
| Point | Distance | Time | Change in Distance | Change in Time |
| 1 | 0 | 0 | --- | --- |
| 2 | 5 | 20 | 5 | 10 |
| 3 | 10 | 30 | 5 | 20 |
| 4 | 15 | 40 | 5 | 10 |
| 5 | 20 | 60 | 5 | 20 |
| 6 | 25 | 75 | 5 | 15 |
This is not a linear function because the slope is not the same for all points on the table.
This is the time it takes to assemble a printer. Each printer has 16 parts.
| Point | Total Parts | Time (hours) | Change in Items | Change in Time |
| 1 | 0 | 0 | --- | --- |
| 2 | 16 | 2 | 16 | 2 |
| 3 | 32 | 4 | 16 | 2 |
| 4 | 48 | 6 | 16 | 2 |
| 5 | 64 | 8 | 16 | 2 |
This table represents a linear function because the slope is 8, which is consistent from point to point.
This is the mileage in a car in miles per gallon.
| Point | Miles Traveled | Fuel Used (gallons) | Change in Miles | Change in Gallons |
| 1 | 0 | 0 | --- | --- |
| 2 | 45 | 1.5 | 45 | 1.5 |
| 3 | 60 | 2 | 15 | 0.5 |
| 4 | 105 | 3.5 | 45 | 1.5 |
| 5 | 120 | 4 | 15 | 0.5 |
This table represents a linear function because the slope is 30, which is consistent from point to point.
This is the data for a savings account college fund.
| Point | Bank Balance ($) | Total Time (Month) | Change in Bank Balance | Change in Time |
| 1 | 500 | 0 | --- | --- |
| 2 | 620 | 6 | 120 | 6 |
| 3 | 710 | 9 | 90 | 3 |
| 4 | 830 | 15 | 120 | 6 |
| 5 | 910 | 17 | 80 | 2 |
| 6 | 1050 | 24 | 140 | 7 |
This is not a linear function because the slope changes from point to point and is not consistent.
