Step 1: Find the x- and the y-intercepts in the first equation
Plug in x = 0 to get y = 1 and
Plug in y = 0 to get x = -1
Step 2: Plot the set of points on the coordinate axis
Plot (0,1) and (-1,0) on the coordinate axis and join the points to get a straight line

Step 3: Find the x and the y-intercepts of the second equation
Plug in x = 0 to get y = 0
Step 4: Plot the set of points (0,0) on the coordinate axis

Step 5: The lines intersect at (-0.5,0.5)

(-0.5,0.5) is the solution to the set of lines.
Skills needed to solve this problem are
1.How to plot a graph on a linear equation - http://www.math.com/school/subject2/lessons/S2U4L3GL.html
2.How to plot a set of points on the coordinate axis
https://www.youtube.com/watch?v=-Hut9QnQlF8