Question 1167144
Start by solving for y:

x + y = -2<br>
Subtract x from both sides:
y = -x - 2    <br>

Draw coordinate axes: by convention, the x-axis is the horizontal axis, and the y-axis is the vertical axis.

{{{ drawing(400,400,-10,10,-10,10, grid(1)) }}}  <br>

Now pick a value of x and calculate y.  For the value of x chosen, move right or left to that x value along the x-axis.  Then move up or down parallel to the y-axis and place a dot at the (x,y) coordinate.   Since this equation is for a straight line, you can plot two points in this way and then draw a straight line through them.  You can (and should) verify that any point on such line also obeys y=-x-2.