Question

Which of the following is NOT the graph of a quadratic polynomial ?

• A.
• B.
• C.
• D.

Answer 1

The correct option is D

Any quadratic polynomial $a{x}^2+bx+c,a\ne 0$ has one of the two shapes of graph either upwards opening parabola or downwards opening parabola.
So,


This is not a graph of quadratic polynomial.