A system of equations is shown below. {3x + 5y = -9 {2x + y = -34 a. Find the solution to the system of equations using either substitution or the linear combination method. Show all your work. b. Explain and show the graphical meaning of the solution. Be sure to label the solution on your graph.

Question

anonymous · Answer

a. The solution is x= -23 and y= 12 
This is because: 
2x+y= -34 can be turned into y= -2x -34
now we can sub y into the first equation, this gives
3x-10x-170= -9
which is
7x= 161
x= -23
Now we can sub x into the second equation 
and that gives us y= 12