What two pairs do i use to find the slope

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

Which representation has a constant of variation of -2.5

Asquare has a side that measures 11 units. what is the area of a circle with a circumference that equals the perimeter of the square? use 3.14 for π, and round your answer to the nearest hundredth. 1519.76 units2 379.94 units2 616.56 units2 154.14 units2