radius = diameter/2
radius = 6.5/2 = m
<span>volume </span> x x (radius)³
x x
x x
= 144 cubic meters
The domain is the set of possible inputs, i.e. the x-coordinates of the points.
Here those are 6, 1 and - 3 which in order is -3, 1, 6.
Then the answer is {-3, 1, 6}.
By the way note that this relation is not a function. Do you know why?
Because the image of -3 is not stated unambiguosly.
Procedures can also be called methods because they are like steps and rules that you can follow.