No 7 & 9 please bgt

Grafik

7. kurva
y = a(x-x1)(x- x2)
y = a(x -0)(x- 3)
ttik potong  (0,0) dan (3,0)

8. garis  melalui (0,2) dan (3,0)
gradien garis = m = (y2-y1)/(x2 -x 1) =  (0-2)/.(3-0)
m = -2/3