We can rewrite the equation of the given line to be in slope-intercept form as follows.
[tex]x-y=7\\x=y+7\\y=x-7[/tex]
Thus, the slope of the given line is 1.
Since parallel lines have equivalent slopes, the slope of the line we want to find is also 1.
Substituting into point-slope form,
[tex]y-0=1(x-1)\\\\\boxed{y=x-1}[/tex]
