Use the Table to Estimate the Rate of Change of Y

Multiple Choice

Use the table to estimate the rate of change of y at the specified value of x.
-x = 1.
$\begin{array} { c | c } x & y \\\hline 0 & 0 \\0.2 & 0.01 \\0.4 & 0.04 \\0.6 & 0.09 \\0.8 & 0.16 \\1.0 & 0.25 \\1.2 & 0.36 \\1.4 & 0.49\end{array}$

A) 2
B) 1
C) 0.5
D) 1.5