The points on `x+y=4` that lie at a unit distance from the line `4x+3y-10=` are

Explanation

Let P(h, k) lies on` x + y = 4`


`=> h + k = 4`


We know the distance of the point (x1, y1) from the line `ax +by +c = 0 `is


`d = |(ax1 + by1 + c)/(sqrt((a^2+b^2)|))`


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