Concept explainers
The relationship between the amount of gas used and the distance traveled using a table, an equation, and a graph.
Whether total distance traveled is a function of the gas used.
The independent and dependent variables.

Explanation of Solution
Given information:
An automaker makes a car that can travel 40 mi on its charged battery before it begins to use gas. Then the car travels 50 mi per gallon of gas used.
Graph:
Distance that can be covered by a car on its charged battery
Let
Distance that can be covered by a car using 1 gallon of gas
So,
Distance that can be covered by a car using
Therefore,
Total distance travelled by a car
Let
So,
This is an equation.
Now draw the table.
At
At
At
At
x | 0 | 1 | 2 | 3 |
y | 40 | 90 | 140 | 190 |
Here,
Now draw the graph based on this table.
Plot the points
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