SOLUTION: Solve the system of equations by graphing. Then classfy the system. x+y=15 X-y=3

Algebra ->  Functions -> SOLUTION: Solve the system of equations by graphing. Then classfy the system. x+y=15 X-y=3      Log On


   



Question 613723: Solve the system of equations by graphing. Then classfy the system.
x+y=15
X-y=3

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Graph the two equations to get




Note: the first equation x+y=15 is in green and the second equation x-y=3 is in blue

We see that the two lines intersect at the point (9,6). So the solutions are x = 9 and y = 6

So the system is consistent and independent.
--------------------------------------------------------------------------------------------------------------
If you need more help, email me at jim_thompson5910@hotmail.com

Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you

Jim
--------------------------------------------------------------------------------------------------------------