Hi Jenny,
The question asks you to use linear graph paper.
You are not being asked to do anything with logarithms.
What Ginger has tried to show you is that this exercise in not feasable.
I have assumed Gingers figures are correct. They meet reasonableness checks.
You could show the planets all on graph paper. Divide all Ginger's figures by 10 and your graph paper will only need to be 40 cm long BUT
to add the 3 stars as well would still require another 5km of graph paper. That would k**l toooo many trees. So it is not feasable.
It does say lable the ones that you can so maybe you are just being asked to draw up the 40cm graph and say how far further the stars would be.
As Ginger has already said, the whole point of this exercise is to show you that some things, like this, are not suited to linear graphing.
Such things need to be graphed on logarithmic paper. You are not expected to know what that is yet.
This exercise is just demonstating the need for a different graphing method. :)