Question 87380
It basically is already solved and can easily be graphed. Just start plugging in values to get your x,y points and make your line. The equation is basically in {{{y=mx+b}}} form, the equation for a line.

{{{f(x)=-2x-5}}}
{{{f(0)=-5}}} (0,-5)
{{{f(1)=-2(1)-5}}} {{{f(1)=-7}}} (1,-7)
{{{f(2)=-2(2)-5}}} {{{f(2)=-9}}} (2,-9)

The graph would be as follows.

{{{ graph(300,300,-7,7,-7,7,-2x-5)}}}