Question 418524
The graph of {{{y = sin(x)}}} is periodic with period {{{2pi}}} and looks like this:


{{{graph(200,40, -10, 10, -2, 2, sin(x))}}}


The graph of {{{y = 3*sin(x)}}} is the same, except "stretched" by a factor of 3.


{{{graph(200, 80, -10, 10, -4, 4, 3*sin(x))}}}