2. Pie Graph Used to show how a whole unit is divided into simpler portions. Usually shown in percentages.

3. Bar Graph Used to display related data collected for several similar groups. A display of one variable used in several different situations.

4. Line Graph Used to show changes over time. This is the type most used in the physical sciences. Used to show the relationship of one variable to a second variable.

5. Direct TYPES OF RELATIONSHIPS

6. Indirect

7. Exponential

8. Graphs of Motion The data shows the runner took 10 seconds to run each 50-meter segment. Because the time was the same for each segment, you know the speed was the same for each segment.

9. Graphs of Motion You can use position vs. time graphs to compare the motion of different objects. The steeper line on a position vs. time graph means a faster speed.

10. Slope The steepness of a line is measured by finding its slope.