Question

Which ordered pair is the solution to the system of equations?

-3x+4y=-20
x+4y=-4

A.
(8, 1)

B.
(−12, 2)

C.
(−4, −8)

D.
(4, −2)

Answer 1

Okay my friend do you know how to do system of equations?

Answer 2

Cause none of us will give you the answer (welll most of us won't) so you have to tell me what you did so far so I can guide you through this awesome problem.

Answer 3

i havent done anything i dont want the answer i need help to know how to do it.

Answer 4

Okay good. Here is an example
-8y + 4x = -10
2y +4x = 12

First choose which letter you wanna solve for doesn't matter which one you choose.
I usually go with X, I get rid of X.
-8y +4x = -10
2y + 4x= 12
in order to get rid of the X you have to multiply one equation by the negative sign since both of the equations are positive
so it looks like this
-8y+ 4x = -10
(-) [2y + 4x = 12] (distribute the negative sign)

-8y + 4x = -10
-2y -4x =-12

then you get
-10x = -22
x = -22/-10 = 22/10 = 11/5

then you plug the x value back into one of the orignial equations and solve for y
2y + 4(11/5) = 12 and then you get
2y = 12- 44/5
and solve for y

Answer 5

Then you get the two functions. I chose a horrible example by the way but that's how you basically do it. If you need anymore help or clarifiation please tag me or let me know okay? Thank you :)

Answer 6

I am soo sorry if i made it worse

Answer 7

im sooooo confused gosh.

Answer 8

Okay how I explain this to you hmmm wait I will give you this one website one sec

Answer 9

-3x+4y=-20
x+4y=-4
right since you didn't specify the process I can do substitution method
you make something equal to something
so x = -4y - 4
then subsitutue that into the first equation's x value and solve for y
-3(-4y -4) = -20
Y= ?
distribute then solve for y
after you are DONE with solving for Y
you USE the Y-VALUE YOU GOT and plu it back into EITHER equation's Y-VAULE AND SOLVE for the X-VALUE
X+ 4(?) = -4
NOW you solve for x here
X =/
( / , ? ) would be your answers (the numbers ofc)

Answer 10

Any better or no???

Answer 11

I feel really bad now :( I am so sorry