9 a For each line write an equation in slope point form i P 2 4 4 4 2 0 2 4 4 20 P 4 2 y f x N X y y h x 2 ii iv y g x 2 6 0 2 y 2 0 y y k x N X P 1 2 b Write each equation in part a in slope intercept form then determine the P 3 3 X