1. Graphing Relations
Lesson 1.6

2. You can use a graph to show the relationship between input and output.
The first step is to complete the input/output table.
Then, create a graph that will coordinate with the table you created.

3. Complete this table...
Input n
Output
4n + 2 1 2 3 4 5

4. Plotting on a graph
Output
(Y-axis)
Input (x-axis)

5. Try this one... Complete the table, and make a graph.
The cost of n CD’s in $’s is 12n.
What is the cost of 1 CD?
What is the cost of 5 CD’s?
How many CD’s could you buy with 72$
Input (n)
Output (12n) 2 4 6 8 10

6. A Word Problem for You
Mr. Sam has 25 granola bars. He gives 3 granola bars to each student who stays after school to help.
A) show a relation to show how the number of granola bars that remain is related to the number of helpers.

7. When you connect all the points, you will have a straight line.
This is called a linear relation.
The graph shows that each time the input increases by 1, the output increases by 4.