__Example__**: **Find an equation of tangent to the parabola parallel to the line .

__Solution__**:** The given equation of parabola can be written in the form

Compare this equation of parabola with the general equation of parabola .

After comparing with standard equation parabola we have

Now to find slope of given line is

The required equation of tangent to the parabola is given as

This is the equation of tangent to the parabola.