SOLUTION: Solving Systems of Equations Graphically. Please solve this problem for me. I keep getting the wrong graph, therefore I must not understand how to graph these equations: y

SOLUTION: Solving Systems of Equations Graphically. Please solve this problem for me. I keep getting the wrong graph, therefore I must not understand how to graph these equations: y - x =

Question 175104: Solving Systems of Equations Graphically. Please solve this problem for me. I keep getting the wrong graph, therefore I must not understand how to graph these equations: y - x = 1 & y + x = 3. Thank you, Charlie
Answer by actuary(112) (Show Source): You can put this solution on YOUR website!
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.

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