Respuesta :

D. 1/3 
If it was 1/2 it would have increased more
The answer is D. Input the given points (15, 5) and (0, 0) into the formula m=(y1-y2)/(x1-x2) to get m=(5-0)/(15-0) or m=(0-5)/(0-15). Both simplify to 1/3.