Objective: To be able to read and plot graphs of real-life problems

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Objective: To be able to read and plot graphs of real-life problems Interpreting graphs Objective: To be able to read and plot graphs of real-life problems

What does it show? First, look at the labels to see what the graph represents.

Drawing graphs of real-life situations In your exams you may be asked to complete, or draw, graphs to represent given situations.

Example 1. You are at home getting ready to go out to your stamp collecting club. You leave your house and jog the 1000m to the club. You arrive 5 minutes later. You exchange stamps and chat for 1 hour, then leave for home. It takes you 10 minutes. Plot a distance time-graph to represent your journey to and from the club.

Drawing graphs of real-life problems Choose a suitable scale for each axis. 2. Decide how many points to plot. You are at home getting ready to go out to your stamp collecting club. You leave your house and jog the 1000m to the club. You arrive 5 minutes later. You exchange stamps and chat for 1 hour, then leave for home. It takes you 10 minutes. You are at home getting ready to go out to your stamp collecting club. You leave your house and jog the 1000m to the club. You arrive 5 minutes later. You exchange stamps and chat for 1 hour, then leave for home. It takes you 10 minutes. 3. Draw the graph with suitable accuracy 4. Provide a title and label the axis The journey to and from my stamp collecting club 200 400 600 800 1000 Distance from home (m) 0 10 20 30 40 50 60 70 80 Time (minutes)

The journey to my stamp collecting club 200 400 600 800 1000 Distance from home (m) 0 10 20 30 40 50 60 70 80 Time (minutes) Choose a suitable scale for each axis. 2. Decide how many points to plot. 3. Draw the graph with suitable accuracy 4. Provide a title and label the axis Pupils can decide where the shop is on their journey, so graphs will vary slightly You leave your house to visit a friend. On the way, you stop at the local shop for 5 minutes to buy some sweets. You arrive at your friend’s house 1.5km, and 15 minutes, after you left home. You stay with your friend for 2 hours before leaving. It takes you 20 minutes to get home.

Which graph?

Which graph?