5 Two ponds in a garden are being filled with water from separate hoses. The amount of water in
each pond after t minutes is shown below.
Pond P:
Time (t minutes)
01234
Pond Q:
Time (t minutes)
Amount of water (AL) | 5
01234
5 20 35 50 65
Amount of water (AL) 10|20|30|45|60|
a Plot A against t for each pond.
b Which pond is being filled at a constant rate? Explain your answer.
For the pond which is being filled at a constant rate:
¡ Find the gradient and A-intercept of the line, and explain what these values mean.
¡¡ Find the equation connecting A and t.
iii Find the amount of water in the pond after 8 minutes.