The general point slope form of a line of slope m through (a,b) is
y - b = m(x - a)
We have (a,b)=(3,27). So the first box, with the ?, is negative the y coordinate of the first point,
Answer: -27
I usually don't do these with the slope but I will this time. Slope is change in y over change in x.

So the line is
y - 27 = 8(x - 3)
y + - 27 = 8(x + -3)
So the three boxes are: -27, 8, -3
I usually do the line through two points (a,b) and (c,d) as

Here we have (a,b)=(3,27) and (c,d)=(-8,-61)


