The equation of the tangent to the parabola $y^{2}=16x$ at the point $P(3, 6)$ is:

What is the polar of the focus of a parabola?

Let $P(at^{2}, 2at)$, $Q$, and $R(ar^{2}, 2ar)$ be three points on the parabola $y^{2}=4ax$. If $PQ$ is a focal chord and $PK$ is parallel to $QR$, where the coordinates of $K$ are $(2a, 0)$, then the value of $r$ is:

If the line $3x - 2y + 12 = 0$ intersects the parabola $4y = 3x^2$ at the points $A$ and $B$,then at the vertex of the parabola,the line segment $AB$ subtends an angle equal to

If $a > 0$ and $b^2 - 4ac = 0$,then the curve $y = ax^2 + bx + c$

Find the equation of the chord of the parabola $y^2 = 6x$ passing through the vertex and the negative end of the latus rectum.