Question

I FAN AND MEDAL

Solve the following system of equations:

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

A (1, 12)
B (-1, -12)
C (12, -1)
D (12, 1)

Answer 1

I also need help with this one :) but no pressure it's okay if no one can answer it

Determine which system below will produce infinitely many solutions.

A) 2x + 5y = 24
2x + 5y = 42

B) 3x - 2y = 15
6x + 5y = 11

C) 4x - 3y = 9
-8x + 6y = -18

D) 5x - 3y = 16
-2x + 3y = -7

Answer 2

ill do the first stew you do the second one

Answer 3

Okay

Answer 4

sorry i was in chat let me pay attention

Answer 5

Oh its okay

Answer 6

I'm not sure of where to start for these problems

Answer 7

sorry i have the answer but i dont want to give you it right away i got banned for doing that the last time

Answer 8

Oh it's okay! & the first

Answer 9

What do you mean by stew lol

Answer 10

helloo @My_Yich

Answer 11

Ok, so you have to isolate a variable so you can start to solve it. Since the x value is already in a 1:1 ratio with itself, lets start with that one. Multiply the bottom by -1

Answer 12

so now you have
x - 2y = 14
-x - 3y = -9

Answer 13

then what you want to do is Add the two equations together:
Add the two equations together:
-5y = 5
y = -1

Answer 14

@Stewpeas_0831

Answer 15

Now you can plug this back in to the first equation to find x.

x - 2(-1) = 14
x + 2 = 14
x = 12

Answer 16

To check to see if this is correct, plug them both into the second equation to make sure it makes sense.

(12) + 3(-1) = 9

Answer 17

soo whats the answer

Answer 18

(12,-1)! Thanks so much that helped a lot!

Answer 19

welcome

Answer 20

multiply the first equation by 2
4x - 3y = 9 -->(2)
-8x + 6y = -18

8x - 6y = 18 (result of multiplying by 2)
-8x + 6y = -18

add both equations together and then you will get your answer