Answer:
m = -1/2
Explanation:
From the left point to the right point, it goes down 2 units and goes to the right 4 units
Slope is the same as rise over run, i.e. how many units it goes up/down by divided by the amount of units it goes to the right/left by.
In this case, out slope equation would look like -2/4
That can be further simplified to -1/2