Question 175104
Rewrite each equation in slope & y-intercept form

y-x=1  Equation #1
y+x=3 Equation #2

Equation #1 in slope & y-intercept form

y=x+1

Equation #2 in slope & y-intercept form

y=-x+3

The graphs of the two lines are

From the graph it appears that the solution (point of intersection) is (1,2)

It is always a good idea to check your answer.  Substitute the solution (1,2) into the equations to see if equality still is the case.

{{{graph(300,300,-5,15,-5,15,-x+3,x+1)}}}