﻿ If the parabola y2 = 4ax passes through the pint (1, –2), then the tangent at this point is : Kaysons Education

# If The Parabola y2 = 4ax passes Through The Pint (1, –2), Then The Tangent At This Point Is

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## Question

### Solution

Correct option is

x + y + 1 = 0

Tangent to  y2 = 4ax is                                    … (1)

It passes through (1, –2). Then

Also (1, –2) lies on y2 = 4ax     a = 1

Put this in (2).

m2 = –2m – 1  (m + 1)2 = 0  m = –1

And also   a = 1  y = –x – 1.

#### SIMILAR QUESTIONS

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Q2

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Q10

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