The general form for point slope is y-y1 = m(x-x1)
Find the slope between the given coordinates by using y2-y1/x2-x1
so that would be -1-5/-6+8 which equals out to 3.
That 3 is your m value
Fill in the x1 value which is a -6
so
To complete the form: y-5 = 3(x+6)
It is a positive six because the two negatives cause a positive