Answer:
y = -1/2x - 3
Explanation:
Slope intercept form is y = mx+b
y = function
mx = slope
b = y- intercept
You find mx by doing (y2-y1)/(x2-x1)
Using all this information...
The y intercept is where the line cross at X=0. On this graph, it crosses at y= -3
For slope. We pick two obvious points. let's choose (2,-4) and (-2, -2)
Plugging the slope equation in from above
(-2 - (-4))/(-2-2)
Simplifying... (2)/(-4), also known as -1/2
Now that we have everything, we can make our equation
y = -1/2x - 3