SOLUTION: Directions: solve each system by graphing. Check the coordinates of the intersection point in both equations. I need step by step instructions on how to complete this problem x

Algebra ->  Linear-equations -> SOLUTION: Directions: solve each system by graphing. Check the coordinates of the intersection point in both equations. I need step by step instructions on how to complete this problem x      Log On


   

Question 125069: Directions: solve each system by graphing. Check the coordinates of the intersection point in both equations.
I need step by step instructions on how to complete this problem
x+y=2
x-y=4
Thank you
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.x%2By=2
2.x-y=4
Let's transform these two equations into slope-intercept form, y=mx+b.
1.x%2By=2
y=-x%2B2
Slope = -1
Y-intercept = 2
+graph%28+300%2C+300%2C+-5%2C+5%2C+-5%2C+5%2C+-x%2B2%29+
2.x-y=4
x-4=y
y=x-4
Slope = 1
Y-intercept = -4
+graph%28+300%2C+300%2C+-5%2C+5%2C+-5%2C+5%2C+-x%2B2%2Cx-4%29+
It looks like (3,-1) is a solution.
Let's check with the two eqautions.
1.x%2By=2
3%2B%28-1%29=2
2=2
True statement.
2.x-y=4
3-%28-1%29=4
4=4
True statement.
Your answer led to two true statements.
It is a good answer.