Answer :

Given: equation is parallel to x + 7y + 2 = 0 and at unit distance from the point (1, -1)


To find: equation of two straight lines


Explanation:


The equation of given line is


x + 7y + 2 = 0 … (1)


The equation of a line parallel to line x + 7y + 2 = 0 is given below:


X + 7y + λ = 0 … (2)


The line x + 7y + λ = 0 is at a unit distance from the point (1, 1).


1 = 1 – 7 + λ1 + 49




Hence, the required lines:


and


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