Question 831778
Choose two x values.
Compute two y values.
Let {{{x=0}}}, {{{y=-0-1=-1}}} (0,-1)
Let {{{x=2}}}, {{{y=-2-1=-3}}} (2,-3)
Plot those two ordered pairs.
Draw a straight line between the two points.
Let {{{x=0}}}, {{{y=-0-1=-1}}} (0,-1)
Let {{{x=2}}}, {{{y=-2-1=-3}}} (2,-3)
{{{drawing( 300, 300, -5, 5, -5, 5,
    grid(1),
  red( circle( 2,-3,0.25 ) ),
  red( circle( 0,-1,0.25 ) )
)}}}
.
.
.
Draw a straight line between the two points.
.
.
.
{{{drawing( 300, 300, -5, 5, -5, 5,
    grid(1),
  red( circle( 2,-3,0.25 ) ),
  red( circle( 0,-1,0.25 ) ),
graph(300,300,-5,5,-5,5,-x-1)
)}}} a straight line between the two points.