Answer:
This is a linear equation in two variables, X and Y. To graph this system of equations, plot the lines for each equation on an x-y coordinate plane. The line representing y=-x-3 will have a negative slope (it decreases as you move to the right) while the line representing y+x=2 has a positive slope (it increases as you move to the right). Where these two lines intersect is where both equations are true at once; that point represents one solution for your system of equations.