Hey im new, stuck on this question :( anyone help me? :D

(A) Find an equation of the line l which passes through the points A(1,0) and B(5,6)?...( I got y = 3/2 x + 3/2)???)

The line m with the equation 2x + 3y = 15 meets l at the point C

(B) Determine the coordinates of C

THe point P lies on m and has x co-ordinate of -3

(c) Show by caclulation PA = PB

Thanks in advanced :D