Question 314730
Below are 4 plots of the form {{{y=a*2^x}}}
.
.
.
{{{ graph( 300,300, -10, 10, -5, 20, 0.1*2^x,2^x, 10*2^x, 100*2^x) }}}
.
.
.
Purple : {{{y=100*2^x}}}
Blue : {{{y=10*2^x}}} 
Green : {{{y=1*2^x}}} 
Red : {{{y=0.1*2^x}}} 
.
.
.
Looks like the value of {{{a}}} shifts the curve to the left for increasing {{{a}}}, compared to {{{a=1}}} to the right for decreasing {{{a}}}.