A set of parallel chords of the parabola `y^2=4a x` have their midpoint on any straight line through the vertex any straight line through the focus a straight line parallel to the axis another parabola

A set of parallel chords of the parabola y^(2)=4ax have their midpoint on any straight line through the vertex any straight line through the focus a straight line parallel to the axis another parabola

A set of parallel chords of the parabola y^2=4a x have their midpoint on A. any straight line through the vertex B. any straight line through the focus C. a straight line parallel to the axis D. another parabola

A set of parallel chords of the parabola y^2=4a x have their midpoint on (a)any straight line through the vertex (b)any straight line through the focus (c)a straight line parallel to the axis (d)another parabola

A set of parallel chords of the parabola y^(2)=4ax have their mid point on any st line

Obtain the equation of the family of straight lines parallel to the line y=2x.

The equations to the straight line through (a, b, c) parallel to the z -axis are

The equations to the straight line through (a,b,c) parallel to the z -axis are

Equation of straight line parallel to the y axis and passes through (-2, 3) is