# The shortest distance between line Option 1) Option 2) Option 3) Option 4)

As we learnt in

Perpendicular distance of a point from a line -

- wherein

is the distance from the line .

Let (a2, a) be a point of x=y2

Distance between (a2, a) and y-x-1=0 is

This is minima when

Option 1)

This option is incorrect

Option 2)

This option is incorrect

Option 3)

This option is incorrect

Option 4)

This option is correct

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