The quickest way to find this??? (1 Viewer)

[Michaelmoo]

Hey there. What would be the fastes way to do this question???

Find thelength of the focal chord that meets the parabola x^2=-12y at (2,(-1/3))

Basically I found the equation of the line, Found the second intercept and then determined the length. This method can be quite long for such a basic question. Is there any other way to approach this???

Thanks.

 

[Timothy.Siu]

can u just find the focus and then do distance formula?