What is y=-1/2(x-3)(x+2) in vertex form

15 points ! ~ see if you know the answer to both you!

Consider the functions below. function 1 function 2 function 3 select the statement which is true about the functions over the interval [1, 2] a b function 3 has the highest average rate of change function 2 and function 3 have the same average rate of change. function and function 3 have the same average rate of change function 2 has the lowest average rate of change d.

Which representation has a constant of variation of -2.5