Find the coordinates of the focus and the vertex, the equations of the directrix and the axis, and length of the latus rectum of the parabola:
y2 = 12x
Given equation : y2 = 12x
Comparing given equation with parabola having equation,
y2 = 4ax
4a = 12
• a =3
Focus : F(a,0) = F(3,0)
Vertex : A(0,0) = A(0,0)
Equation of the directrix : x+a=0
• x+3=0
• x = -3
Lenth of latusrectum : 4a = 4.(3) = 12