The graph represents the heights of two climbers on a climbing wall over a 12-minute time period.

At which times could Rory's phone have been plugged into the charger? Select three options.
A car increases, then decreases, its speed. Which table could represent the speed of the car?




Which graph could represent a constant balance in a bank account over time?
The graph represents a person’s heart rate in beats per minute during 30 minutes of exercise.

The help desk is keeping track of the number of minutes the average caller spends on hold.

The graph shows the speed of Sam’s car over time.

The graph represents the heights of two climbers on a climbing wall over a 12-minute time period.

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