SOLUTION: 3x+y=9 5x-y=7 Solve the system of equation by graphing Im confused becasue how can they just pick numbers?? Please Help thanks!

Question 719859: 3x+y=9
5x-y=7
Solve the system of equation by graphing
Im confused becasue how can they just pick numbers?? Please Help thanks!
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!

First put them both into the same form
(1)
(2)
-----------------
The slope of (1) is
The slope of (2) is
----------------------
The point where the lines intersect is
the solution of the equations
To find the solution:
Add the equations as they are given originally

PLug this result back into either equation

------------
This tells me the intersection is at ( 2,3 )
Here's the graph:

RELATED QUESTIONS
Solve the system of equation by graphing. Im lost. x+y=7... (answered by solver91311)

Solve the system by graphing 3x - y = 1 3x - y = 2 Can someone help me... (answered by stanbon)

Solve the system by addition. 5x � 3y = 13 4x � 3y = 11 The sum of two numbers is 90. (answered by aaaaaaaa)

Can you help me solve a system of equations by graphing (just explain the steps) for the... (answered by stanbon)

Solve the system of linear equations by graphing y=x+3 3x+y=-1 Please... (answered by Edwin McCravy)

can someone please help me? solve each system by graphing. give the ordered pair of the (answered by Alan3354)

Please help. Solve the system of equations by graphing. y=-3/5x and y=-1/5x+2. Thank... (answered by cwmcwilly07)

Please help. Please Solve the system by graphing 3x + y = 6 3x - y = 0... (answered by checkley71)

Please help me solve this equation. Solve the system by graphing. x+y=-3... (answered by stanbon)