Tentukan persamaan garis yang melalui titik(0,-9) dan bergradien berikut! A.7,B.-5/6,C.0,D.6 2/3.tolong jawab ya!

A.y-y1=m (x-x1)
y-(-9)=7 (x-0)
y+9=7x-0
y=7x-0-9
y=7x-9
B.y-y1=m (x-x1)
y-(-9)=-5/6 (x-0)
y+9=-5/4x-0
y=-5/4x-0-9
y=-5/4x-9
C.y-y1=m (x-x1)
y-(-9)=0 (x-0)
y+9=0-0
y=0-0-9
y=0-9
D.y-y1=m (x-x1)
y-(-9)=6 2/3 (x-0)
y+9=6 2/3x-0
y=6 2/3x-0-9
y=6 2/3-9