SOLUTION: Solve the system of equations by graphing. Then classify the system.
x+y=7
x-y=-1
Algebra.Com
Question 243532: Solve the system of equations by graphing. Then classify the system.
x+y=7
x-y=-1
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Solve the system of equations by graphing. Then classify the system.
x+y=7
x-y=-1
---
Solve each equation for "y":
y = -x+7
y = x+1
-----
Plot two two points for each equation and draw a line thru them:
For y = -x+7
Let x = 0, then y = 7 giving you (0,7)
Let x = 2, then y = 5 giving you (2,5)
-------------------
For y = x+1
Let x = 0, then y = 1 giving you (0,1)
Let x = 2, then y = 3 giving you (2,3)
--------------------
Plot each pair of points and draw the lines to get the graphs.
--------------------
==========================================
The two lines meet at (3,4) so that is the solution
for the system of equations.
--------------------------------------------
Solution: (3,4)
Class: consistent
Cheers,
Stan H.
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