Question

Which ordered pair is the solution to the system of equations?
x-4y=6
3x+y=-8

A.
(2, −1)

B.
(1, −9)

C.
(−2, −2)

D.
(−6, −3)

Answer 1

Hello

Answer 2

hi

Answer 3

substitute the x and y values for all 4 choices and see which one is correct

Answer 4

@math&ing001

Answer 5

Or you can solve the system:
-3*(x-4y=6) ie. -3x+12y=-18
+3x+ y =-8
13y= -26
y=-2
Now find x by replacing y with its value in one of the equations, then you'll get your ordered pair (x,y)

Answer 6

oh ok

Answer 7

So what did you get for x ?

Answer 8

hold on

Answer 9

i think its D

Answer 10

Not quite, did you try to get x the way I told you ?

Answer 11

umm hold on let me try it again

Answer 12

is it A?

Answer 13

I'm not interested in the answer as much as I'm interested in the way you find it. Please explain how you did to find those answers.

Answer 14

well I found A by doing\[2-4*-1\]

Answer 15

and it gave me 6

Answer 16

Yes but did you try for the second equation ? It has to be correct for both !

Answer 17

ohhh its c

Answer 18

Correct !

Answer 19

yay:D