Answer: Hey! Since the other answer is obviously wrong. Here is the actual answer! (from Khan Academy) .
Explanation:
The slope is 3.
Change in y = + 3
Change in x = +1
So, it is not 1/3 but it is 3/1 which is technically 3.
Here is the formula!:
Slope = rise/run = Change in y / change in x.
Always put the y above the x!!! :)