The slope of the line of best fit, which is given as 1/2, indicates the relationship between the number of hitting attempts (x) and the number of kills (f(x)).
In this case, a slope of 1/2 means that for every 2 hitting attempts, Ava makes about 1 kill.
Based on this interpretation, the accurate statement is:
Ava has about 1 kill for every 2 hitting attempts.