Answer:
y = -1/2x or -0.5x
Explanation:
We can find it by finding two points where the line intersects, which the graph shows. They are (-4, 2) and (4, -2). So we can see it goes:
4 down, which is the rise (or fall in this case. Since it goes down, it can be represented as negative 4)
8 to the right ( which is the run)
We can plug this into the rise over run equation, which gives:
-4/8, which is -1/2 simplified.
Since the line intersects (0, 0), we only have to put the slope into the equation, which gives:
y = -1/2x (or -0.5x if you want decimals.)