Help fast it is due soon

Which of the following is true for the relation f(x)=2x^2+1

Aperpendicular bisector, cd is drawn through point con ab if the coordinates of point a are (-3, 2) and the coordinates of point b are (7,6), the x-intercept of cd is point lies on cd.

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.