Let be the locus of the mirror image of a point on the parabola with respect to the line. Then the equation of tangent to at is:
Explanation for the correct option:
Finding the equation of the tangent at the given point:
Consider the given equation
Its mirror image of the parabola is
Differentiating the above equation with respect to
Then the equation of the tangent to curve at
We know that the equation of tangent is,
Hence , the correct answer is Option (D).