Question

find an equation of the line that passess throught 0.-6 amd 5, 3

Answer 1

the slope is (3+6)/(5-0)
Now you have a point and a slope

Answer 2

I am confused on what to do with this?

Answer 3

c'mon, babe. the slope is 9/5, so the line is

Using (0,-6), we get
y = 9/5 x - 6

or, using (5,3)
y = 9/5 (x-5) + 3
which is the same thing.