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I am indeed using \includegraphics... because when I used \begin{figure}... I got a error message from texmaker

\begin{table}[h]
\centering
\begin{tabular}{ |m{3cm}| m{7.5cm}| m{3cm}| }
\hline alkaan & \includegraphics[scale=0.08]{alkaan} \centering &-aan \\
\hline alkeen & \includegraphics[scale ...

Hay

When I insert a figure in my table it makes the Hline disappear, can anyone tell my how I can fix this.