Answer:

Step-by-step explanation:
I am assuming that the functions are:

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Hope this helps you!
From the table, you know that Jupiter is further away from the sun. So if you subtract the distance of the shorter one, which is Mars, from the distance of the longer one, which is Jupiter, you woould get the distance of Jupiter from Mars.
4.84 x 10^8 - 1.42 x 10^8
= (4.84 - 1.42) x 10^8
= 3.42 x 10^8
Therefore the distance is 3.42 x 10^8
Hope this helped, if you don't understand what I was doing in the working, you can just imagine substituting a = 10^8, things will make more sense. As for what I was talking about in the huge paragraph above, if you're confused you can also draw it out.
Answer:
The relation which is a function is the one in which none of the first coordinates repeated.
Step-by-step explanation:
I got this wrong just to help you figure out the right answer. (I just did not answer and this is the final result)