Me with these i’ve been stuck and don’t know what to do

First, x intercepts are (-1,0) and (-3,0). y intercept is(0,2)

second, left side is a function because there are no x-values paired with two different y-values. right side is not a function because the x-value 3 is paired with two different y-values values

third, slope is ride over run, or the difference in y values divided by difference in x values. slope is 1/2. intercept is at (0,2). the equation is then y=1/2*x + 2

Maybe the answer is 20mm. all i really did was just multiply, which is obvious.