The answer would be 8,107
#3 is not a function because there are two answers for one out put
#4 is a function because it is a straight line
I think the equation is y= -1/3x+1. The slope is going down, so it’s negative. And the y intercept is 1. And how I got a fraction is by using rise/run.
I’m gonna say 24 mm explanation I’m guessing