Interactive practice questions
A bucket containing water has a hole through which the water leaks. The graph shows the amount of water remaining in the bucket after a certain number of minutes.
What is the slope of the line?
What does the slope tell you?
The amount of water in the bucket increases by $1$1 litre every $\frac{1}{2}$12 minute.
The amount of water in the bucket decreases by $\frac{1}{2}$12 litre every minute.
The amount of water in the bucket decreases by $1$1 litre every $\frac{1}{2}$12 minute.
The amount of water in the bucket increases by $\frac{1}{2}$12 litre every minute.
The graph shows the cost, in dollars, of a phone call for different call durations.
The table shows Skye's progress through a four-hour ultramarathon.
The table shows the linear relationship between the temperature on a particular day and the net profit of a store. Find the rate of change of net profit.