equation of a line

Question

what is the equation of the line that passes through (3,-3) and (9,-5)

Answer 1

slope = (-3--5)/3-9) = 2/-6 = -1/3 = (y+3)/(x-3)

-x+3 = 3y +9

3y =-x +3-9

y = -x/3 -2 in slope intercept form

or

x+3y =-6