[tex]y=x-10[/tex]
To graph a linear function as given you need to find two points on the line.
When x=0
[tex]\begin{gathered} y=0-10 \\ y=-10 \end{gathered}[/tex]
Point (0,-10)
When x=1
[tex]\begin{gathered} y=1-10 \\ y=-9 \end{gathered}[/tex]
Point (1,-9)
You put those points in the plane and draw a line that passes through both points:
