Question

Part 1:
Solve the following system of equations. Please show your work to receive full credit.
x - y = 13
2x + y = 2

Part 2:
Explain which method you chose to solve the system and why you felt it was the best choice.

Answer 1

for part 1 you can use elimination method. simply multiply the first equation by 2 then add it to the second equation

Answer 2

part 2 would be subjective

Answer 3

I would just use substitution for this one. It is very straightforward.

Answer 4

We have
\[x-y=13\]
\[2x+y=2\]
I would isolate the y in the second equation,
\[y=-2x+2\]
and then plug that into the first equation,
\[x-(-2x+2)=13\]

Answer 5

Then you solve for x,
\[x=11\]
Then you take that result and plug it back into one of the equations and solve for y.

Answer 6

Does that make sense?

Answer 7

yeah

Answer 8

So what did you get for your y value?

Answer 9

24 not sure if its right if not show me how to plug it into y

Answer 10

We got x=11 correct?
So we would put that back into an equation to solve for y.
x-y=13
(11)-y=13
-y=2
y=-2

Answer 11

okay thax

Answer 12

I don't want to be that guy, but it is considered polite to award a medal to people who give good answers and guide you to the correct answer.