1/3 will be your answer. You always put Y above and X below. it moves 1 on the y axis and 3 on the x axis.
The line passes through the origin (0, 0) and (6, 2).
slope = (difference in y)/(difference in x)
slope = (2 - 0)/(6 - 0)
slope = 2/6
slope = 1/3
Answer: 1/3
