Answer:
y = -1/2x
Explanation:
The equation is y = mx + b
m = the slope
b = y-intercept
The slope = rise/run
Let's pick 2 points (0,0) (4, -2), we see that the y decrease by 2 and the x increase by 4, so the slope is
m = -2/4 = -1/2
Y-intercept is located at (0,0)
So, our equation is
y = -1/2x