Question 932492
(0,0) (6,0) (3,-27)* Assuming it is '-27' 
y = a(x-6)(x-0)   Good Work
y = a(x^2 - 6x)
...
P(3,-27)
-27 = a(-9)
3 = a
..........
y = 3(x^2-6x)
y = 3x^2 - 18x