Answer:

The graph is drawn below.
Explanation:
Let the minutes passed be
and height of water level be
cm.
Given:
Rate of rise of water level,

When

Therefore, the relationship can be expressed using the point-slope form of an equation if a line.
The point-slope form is given as:

Here,

Therefore, the relationship is given as:

Therefore, the relationship between the pool's water level (in centimeters) and time (in minutes) is
.
The graph is shown below.