Answer: A. Her A.P.R will change after six months and be between 15.24% to 23.24% assuming that she has been making on-time payments during those first six months.
The equation for slope is y=mx+b therefore your equation would be y=.5x+2 or y=1/2+2 both of these are correct just the matter of fact of what way your teacher wants you to use :)
