Conic Sections Question 107

Question: The point at which the line $ y=mx+c $ touches the parabola $ y^{2}=4ax $ is

[RPET 2001]

Options:

A) $ ( \frac{a}{m^{2}},\ \frac{2a}{m} ) $

B) $ ( \frac{a}{m^{2}},\ \frac{-2a}{m} ) $

C) $ ( -\frac{a}{m^{2}},\ \frac{2a}{m} ) $

D) $ ( -\frac{a}{m^{2}},\ -\frac{2a}{m} ) $

Show Answer

Answer:

Correct Answer: A

Solution:

It is obvious.