Question

The graph obtained by plotting $y=2x^2$ is symmetrical about y axis.

• A. True
• B. False

Answer 1

The correct option is A True

To plot the given equation $y=2x^2$, let us assign integer values to x from -3 to 3.
$\begin{array}{cccccccc}x& -3& -2& -1& 0& 1& 2& 3\\ x^2& 9& 4& 1& 0& 1& 4& 9\\ y\cdot x^2& 18& 8& 2& 0& 2& 8& 18\end{array}$
Plot the points (-3, 18), (-2, 8), (-1, 2), (0, 0), (1, 2), (2, 8), (3, 18)
Join the points by a smooth curve.

The obtained graph is symmetical about y axis.