Help me this makes no sense to me

Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

Which expression gives the distance between the two points 2 5 and 4 8