-2
Step-by-step explanation:
If we have an equation of the form y = mx +b then the y-intercept is b.
So now here we have y =-x - 2. Therefore b = -2 and we conclude the y-intercept is -2.
the function makes a strait line horizontally with no x intercept but a y intercept at 9.
the answer is a if my teacher taught me correct