1. Objective: To make line graphs to show how data change over time.

2. T HINK !!! What is a line graph? A graph that uses line segments to show how data change over a period of time.

3. Choose a proper scale and interval. Since we have a big gap in data between 0 and 44, we use a zigzag line to show the break in data.

5. Scale and interval Step 3 Title and labels. Graph ordered pair and connect the points.

8. Make a line graph for the set of data below: Distance from Lightning Distance (km) Time until thunder is Heard (sec) 13 26 39 412

9. Distance from Lightning Distan ce (km) Time until thunder is Heard (sec) 13 26 39 412

11. Practice sheets Lesson 9.4 ‘Line Graphs’ pg 189 Q 1 to 5