Hi, please help with my Octave/ Matlab plot combining two simple equations.

Hi, I'm trying to plot a continuous-time Matlab equation y(t) consisting of x(t+1) and x(t+1). With x(t)=t and 0t1 (and zero elsewhere), I believed I set up the correct equation, but can't resolve having both x and t variables to account for, especially as the ' f plot' command hasn't been covered in our material. Any help with syntax or approach would be appreciated: thanks