#### Answer

$y^2=24x$

#### Work Step by Step

a) The general form of the equation of a parabola with vertex at $(0,0)$ is given by $x^2=4py$ and the focus is: $F:(0,p)$
b) The general form of the equation of a parabola with vertex at $(0,0)$ is given by $y^2=4px$ and the focus is: $F:(p,0)$
For the given problem, we have
$y^2=24x$