To get the right answer

How do you answer this question? (step by step)

Which of the following is the correct equation for this function? a. y= (x+4)(x+2) b. y=x^2+ 3x – 2 c. y+ 2 = – 2(x+3)^2 d. y+ 2 = 2(x+3)^2

What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)