Are the numbers in the circles part of the universal set in Venn diagrams?

Which equation represents a proportional relationship that has a constant of proportionality equal to 1/5

The architect's side view drawing of a saltbox-style house shows a post that supports the roof ridge. the support post is 8 ft tall. the distance from the front of the house to the support post is less than the distance from the post to the back of the house. how far from the front of the house is the support post positioned?

Ineed with 8,9 and 10 love ya guysss