We have the following:
[tex]2x-y=5[/tex]now, in the slope and intercept form of the equation the line is the following
[tex]y=mx+b[/tex]where m is the slope, that is, we have to solve for and, therefore we solve for and in the line (a) and we are left
[tex]\begin{gathered} 2x-y=5 \\ (-1)\cdot(-y)=(-2x+5)\cdot(-1) \\ y=2x-5 \\ m=2 \end{gathered}[/tex]Therefore, the slope is 2
