The slope is
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Given that the slope is 1/5, then
[tex]\begin{gathered} y_2-y_1=1 \\ x_2-x_1=5 \end{gathered}[/tex]Where,
[tex]\begin{gathered} x_1=5 \\ y_1=1 \end{gathered}[/tex]Then,
[tex]\begin{gathered} y_2-1=1\rightarrow y_2=1+1=2 \\ x_2-5=5\rightarrow x_2=5+5=10 \end{gathered}[/tex]