Answer:
y output = 1
Step-by-step explanation:
If you look at the image, look where x equals -9. Look at what points are on that line called x=-9. We see the x=-9 line intersects the blue line system at (-9,1). We now know that the y output for x input being -9, is 1.
Hope this helps(would be grateful if you would make my answer branliest because I need brainliest answers for leveling up.)
