Which sets of ordered pairs represent relations that are functions? you may choose more than one correct answer.
{(1, 0), (2,0), (3, 0), (4,0}}
{(2, 3), (2, 4), (2,5), (2, 6))
{(1, 1), (2, 2), (3, 3), (4,4))
{(1,3), (-1, 4), (1, 4), (-1,3)
((6,-6), (-6, 6), (5,-5), (-5,5))

Asquare is dilated by a scale factor of 1.25 to create a new square. how does the area of the new square compare with the area of the original square? a)the area of the new square is 1.25 times the area of the original square. b)the area of the new square is 2.50 times the area of the original square. c)the area of the new square is 1.252 times the area of the original square. d)the area of the new square is 1.253 times the area of the original square.

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

If the perimeter of the square equals the perimeter of the regular pentagon. each side of a pentagon is 16cm long. how long is each side of the square?