Use the Table to Estimate the Rate of Change of Y

Use the table to estimate the rate of change of y at the specified value of x.
-x = 1.
$\begin{array} { c | c } \mathrm { x } & \mathrm { y } \\\hline 0 & 0 \\0.2 & 0.02 \\0.4 & 0.08 \\0.6 & 0.18 \\0.8 & 0.32 \\1.0 & 0.5 \\1.2 & 0.72 \\1.4 & 0.98\end{array}$

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