Does this graph represent a function? Why or why not?

What are the coordinates of the point is 1/4 of the way from a (-6, -3) to b (6, 1)? a. (-3, -2) b. (0, -2) c. (-1, 0) d. (3, 2)

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?