Find the integral of the function y = x-1 with respect to x

\[\frac{ { x }^{ 2 } }{2} + x + c\] \[\frac{ { -x }^{ 2 } }{2} - x + c\] \[\frac{ { x }^{ 2 } }{2} - x + c\] \[\frac{ {- x }^{ 2 } }{2}+ x + c\]

\[\frac{ { x }^{ 2 } }{2} - x + c\]

\[\int x dx = \frac{ { x }^{ 2 } }{2}+c\]