Explanation:
The best way to solve these is by making them into a equation, rise over run, or y over x.
You will get the same answer nomatter which order these are values are in. Now, solve for this equation.
Now this is negative and kind of messy, although, we can turn both values into positive values without the answer changing, just be careful on other problems with this technique as it doesn't always work.
Now we can simplify again.
The slope is 1/2!