Graphing in quadrant one

Question

The question is the x-coordinate must be prime,the y-coordinate must be a multiple of 3 what is the numbers ( , ) and the second question is it must lie on the y-axis what is the numbers ( , ) the third question is the x- and y-coordinate multiples together result in 20 what is the numbers ( , ) and last question is both the x- and y-coordinate are odd numbers what is the numbers ( , )

Answer 1

There are too many prime numbers and multiples of three; you need to be more specific.