Conics Help! (1 Viewer)

[MrBeefJerky]

Hey! Can someone help me with part b of this question? In the answers I don't understand how they got mQP = -1/pq, can someone explain it to me? Thank you!

 

[Carrotsticks]

They used the Gradient formula for PQ, but they didn't show working.

 

[HSC2014]

You're always on carrot -_- 24/7 support service

 

[MrBeefJerky]

Thank you Carrotsticks!

 

[VBN2470]

Here you go:

Hope it helps!