Question

2x+y=-11
3x-4y=11
Please i need the answer and help with understanding how to solve this? much appreciated.
the answer choice: 3,5 ***-3,-5 ***-5,-3 ***5,3

Answer 1

Solve for y.
y=-11-2x

Substitute into second equation

3x-4(-11-2x)=11

Collect like terms:
11x+44=11
x=-3

substitute into first equation:
y=-11-2(-3)

y=-5

Answer 2

2x+y=-11
y=-2x-11 then plug this into the y in the other equation

3x-4(-2x-11)=11
3x+8x+44=11
11x=-33
x=-3 now plug this into either one of the original equations

2(-3) +y=-11
-6+y=-11
y=-5

(-3,-5)

Answer 3

You can just eliminate the y value.

(2x+y=-11) * 4 -> 8x+4y=-44
+3x-4y=11

After adding you get:
11x = -33
so x = -3

Then just plug and chug for y.

2(-3) +y = -11
-6+y=-11
y=-5

So, you get (-3,-5)

Answer 4

sleek-feathered ones

Answer 5

lol my calc teacher says plug and chug too

Answer 6

Thank you so much!!