A dolphin jumps out of the water and then back into the water. His
jump could be graphed on a set of axes where x represents time and
y represents distance above or below sea level. The domain for this
graph is best represented using a set of
(1) integers (3) real numbers
(2) positive integers (4) positive real numbers

The x-axis on this graph represents time. We usually are not interested in describing events before the "beginning of time," so time is generally a positive value. The domain is the description of the x-values for which the function is defined. Here, the domain is best represented by ...

positive real numbers

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jayilych4real jayilych4real · Answer 2 · 2022-03-21T16:18:39+01:00

The domain for this graph is best represented using a set of

Positive real numbers

What is a Real Number?

This refers to the positive numbers which are a combination of rational and irrational numbers.

With this in mind, we can see that on the x-axis of the graph, it is used to represent time.

Hence, time is viewed as a positive integer and the domains are defined, hence they can be best represented by positive real numbers.

Read more about positive real numbers here:

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