(5,1)
Explanation
Step 1
to find x and y , is to find the values such that
[tex]\begin{gathered} 2x-y=9 \\ \text{isolate y} \\ 2x-9=y \\ \end{gathered}[/tex]then, for example
x=5
[tex]\begin{gathered} y=2x-9 \\ y=2\cdot5-9 \\ y=1 \end{gathered}[/tex](5,1)
then, replacing we can verify
[tex]\begin{gathered} 2x-y=9 \\ 2(5)-1=9 \\ 10-1=9 \\ 9=9\Rightarrow true \end{gathered}[/tex]I hope this helps you
