Question 1131916
.
<pre>
One such an equation is  y = {{{(1/4)*sin((2/5)*x)}}}.


Another such an equation is  y = {{{-(1/4)*sin((2/5)*x)}}}.


Actually, there are INFINITELY many such equations and curves.

They can be shifted vertically and then adjusted to pass through the point (0,0).
</pre>