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Find the points on the line x + y = 4 which lie at a unit distance from the line 4x + 3y = 10.

NCERT Exemplar Solutions for Class 11 Maths Chapter 10 - Image 9

Putting the value of y1 = 4 – x1 in equation 3, we get

   

Putting the value of x1 in equation 4, we get

   

Hence, the required points on the given line are (3, 1) and (-7, 11)