Answer
$-18.8\;\rm m/s,\;0\;m/s,18.8\;m/s$
Work Step by Step
The wave is moving to the right, so from the given graph, it is obvious that point's 1 velocity is downward and point's 3 velocity is upward while point's 2 velocity is zero.
The velocity at 1 and 3 are the maximum velocities and their magnitude is given by
$$v_{max}=\omega A=2\pi f A$$
where $f=v/\lambda$;
$$v_{max}=\omega A=\dfrac{2\pi Av}{\lambda}$$
Plugging the known from the given graph
$$v_{max}= \dfrac{2\pi (2\times 10^{-2})(45)}{(30\times 10^{-2})}=\bf 18.8\;\rm m/s$$
Therefore,
$$v_1=\color{red}{\bf -18.8}\;\rm m/s$$
$$v_2=\color{red}{\bf 0}\;\rm m/s$$
$$v_3=\color{red}{\bf 18.8}\;\rm m/s$$