Idon't get it! and it's due to tomorrow!

Do u just plot the numbers on the graph like (1,

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

Ihave trouble finding the nth term of a linear sequence