Question 3023
To solve this problem, you need to solve x and y interms of each other by the method of substitution:

since, x-y=4, we can rewrite this equation as : x=4+y

then solve the second equattion : x+Y=2
but now you can plug in the new equation for x, then you will get : 4+y+y=2
                                                    this becomes:    2y=2-4
                                                                      2y=-2
                                                         therefore,     y=-2/2=-1
now we can go back to the original equation: x-y=4
and then plug in the value for the y:         x-(-1)=4
                            the x becomes:        x=4-1=5

After you get the both values of x and y, then draw the x and y axis and plot the graph using the x and y point and then connet it together.