﻿ Find the equation of the line passing through (a, b) and parallel to px +qy + 1 = 0.   : Kaysons Education

# Find The Equation Of The Line Passing Through (a, b) And Parallel To px +qy + 1 = 0.

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## Question

### Solution

Correct option is

px + qy = pa + qb

Equation of line parallel to px + qy + 1= 0 can be taken as

px + qy + k = 0    (having same slope)

Now, as it passes through (ab):

Substituting for k = –(pa + qb), the required equation of

L:         px + qy = pa + qb

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