is this how i complete this my last tutor it messed up

SOLUTION:
We can draw the rise and run, we get;
The slope of the line is given by;
[tex]Slope=\frac{Rise}{Run}[/tex]The rise is -7 units and the run is 14 units, thus, the slope is;
[tex]Slope=\frac{-7}{14}=-\frac{1}{2}[/tex]Therefore, the slope is;
[tex]-\frac{1}{2}[/tex]