Question 44609
y = sqrt(x - 1)
You can not take a square root of a negative number:
{{{x - 1 >= 0 }}}
Domain: {{{x >= 1}}}
Plug:
{{{sqrt(x - 1) = sqrt(1 - 1) = 0}}}
Range: {{{y >= 0}}}
{{{ graph( 300, 300, -5, 5, -5, 5, sqrt(x - 1) ) }}}