Question

Solve the following system of equations:
x - 2y = 14
x + 3y = 9


(1, 12)
(-1, -12)
(12, -1)
(12, 1)

@DanJS

Answer 1

for x and y?

Answer 2

x=14+3y
x=9-3y

Answer 3

yeah, tons of people responding,, ill sit this one out , less you need help after

Answer 4

14+2y=9-3y

Answer 5

14-9=y

Answer 6

I assume so @jackthegreatest

Answer 7

plug in the numbers and solve the equation, PEMDAS. the first number for x and the second number for y

Answer 8

k

Answer 9

i mistaked somewhere

Answer 10

14+3y=9-3y

Answer 11

Yeah I was kinda confused because you had (4,5) but those aren't options.

Answer 12

@AlexandervonHumboldt2

Answer 13

oh no

Answer 14

i got confused

Answer 15

That's okay we all do @AlexandervonHumboldt2

Answer 16

slow down there alex, it is not a race for medals, well maybe it is for you

Answer 17

I don't know where to start..

Answer 18

First of all, this is my first time ever being on here. This is only my second question so I don't even know how to give medals. I mean unless someone told me how I wouldn't be able to...

Answer 19

Can someone just help me figure it out..

Answer 20

@DanJS

Answer 21

@AlexandervonHumboldt2

Answer 22

x - 2y = 14
x + 3y = 9

Answer 23

Multiply the first equation through by -1.

(-1)(x - 2y) = (-1) *14

-x + 2y = -14 all the signes switched

Answer 24

now the two equations are

-x + 2y = -14
x + 3y = 9

Answer 25

Add them together, Notice the X cancels out

-x + 2y = -14
x + 3y = 9
---------------------
0x + 5y = -5

Answer 26

You are left with

5y = -5 divide by 5 on both sides

y = -1

Answer 27

you really don't have to figure out X in this problem, only one answer choice has
y=-1
in (x , y) ---- (x , -1)

Answer 28

Well two of the options has -1.. there's B and C

Answer 29

Each of those answers is a point in the form (x , y) the first spot is the x value, the second spot is the Y value.
We found the y value, y=-1,
only one answer has -1 in the Y spot

Answer 30

unless it's just C

Answer 31

right , the third one (12 , -1) ...x=12, y = -1

Answer 32

Okay okay that makes sense