Joshua is trying to determine the equation of a quadratic function
 whose vertex is (-3,5) and passes through the point (-1,2). 
 If he writes his final answer in the form (x)= a(x-1)2+k, what will be
 the values(numbers) of a, h, and k?
 And the last answer choice is 
 a=-3/4
 h=-3
 K=5
 Please help