Question 1137322


 Eliminate the parameter. 
{{{x = t^2 + 1}}}, {{{y = t^2 - 1}}} 

Isolate {{{t^2}}} for {{{x=t^2+1}}}



Substitute {{{x-1}}} for {{{t^2 }}}in equation

 {{{y = t^2 - 1}}}

{{{y = x-1- 1}}} 

{{{y = x-2}}}