What is the solution to the system of equations?
-3x + y = -1
2x + y = 14

a (3, 8)
b (-8, 3)
c (-3, 8)
d (8, 3)

The answer is A.

Step-by-step explanation:

I used the elimination method to solve this system of equations.

The elimination method is where you add both of the equations, where one of the variables are equal in terms of number, but the signs are flipped. That's because you add the equations, crossing out one of the variables, leaving you with one variable to easily solve with.

It goes like this:

I multiplied the first equation (-3x+y=-1) by -1, to be able to cross out the y variable when I add.

So, after multiplying, the equation would be: 3x-y=1

Now, you add the two equations together.

  3x-y=1

  2x+y=14

+

  5x=15

Solving we get x=3.

That already gives you a as an answer, but let's continue.

Now we plug x=3 back into one of the equations to find what y is.

2(3)+y=14

6+y=14

y=8

So, the answer is A, (3, 8).

Checking: Just plug the numbers back in to see if they're right.

-3(3)+8= -1

-9+8=-1

-1=-1  

Hope this helps!

yess

step-by-step explanation:

idk whyy this is happening, i cant even read my notification bc i keep getting errors

~coco

70

step-by-step explanation: