We have an equation of a line: y = -x+5.
We have to identify 2 points in order to graph it.
One point can be identified as the y-intercept: (0,5).
Other point can be find by replacing x with some value, like x=1:
[tex]\begin{gathered} y=-x+5 \\ y(1)=-1+5=4 \end{gathered}[/tex]Then, with points (0,5) and (1,4) we can plot:
