The document discusses how to draw and interpret line graphs from data. It provides instructions on properly labeling the axes, plotting data points, and drawing a best-fit line through the points. It also defines slope as the constant in the linear equation y=kx and explains how to calculate slope using the rise over run formula.

1. Line graphs, slope, and interpreting line graphs Charalee Pera Incorporating Technology into the Classroom Wednesday September 29 2010

2. Standards 9d. Students will recognize the slope of the linear graph as the constant in the relationship y = kx and apply this principle in interpreting graphs constructed from data 9g. Students will distinguish between linear and nonlinear relationships on a graph of data

3. Warm Up WED. 8-18-10 Take out BW5c Use the data below to make a line graph Volume of Water (mL) Freeze time (min) 100 5 200 12 300 17 400 22

4. How to draw a line graph

5. How to draw a line graph (Y axis) (X axis)

6. How to draw a line graph Manipulated or Independent Variable Responding or Dependent Variable

7. How to draw a line graph Equally spaced intervals Covers the range of data you have Should begin at zero when possible

8. How to draw a line graph Use the coordinates from your data to plot a data point on the graph

9. How to draw a line graph A smooth line that reflects the general pattern of the graph As close to each point as possible

10. How to draw a line graph Identify the variables and their relationship on the graph

11. What is the formula used to calculate slope?

12. MASS (g) VOLUME (cm 3 or mL) X Y The Density Lab DATA TABLE * * Y 2 y 1 x 2 x 1 RISE RUN 0 1 2 3 4 5 6 7 8 9 10 1 10 9 8 7 6 5 4 3 2 M V D 8.5 6 1.43 6.5 4 1.63 4 3 1.33

15. References Pearson Prentice Hall, Focus of Physical Science, Textbook ALL other pictures were created by myself using power point tools