Question

Two lines, A and B, are represented by the equations given below:

Line A: 2x + 2y = 8
Line B: x + y = 4

Which statement is true about the solution to the set of equations?

It is (8, 4).
It is (4, 8).
There is no solution.
There are infinitely many solutions.

Answer 1

Well you can use elmination to solve this.
\[-2( x + y = 4)\]
you want opposite signs so that the numbers will cancel out

Answer 2

solve that :)

Answer 3

I don't know how

Answer 4

just distribute the -2 to the whole equation

Answer 5

-2 as x and y ?

Answer 6

yep and now -2 x 4=?

Answer 7

-8

Answer 8

\[\frac{ 2x + 2y = 8 }{ -2x-2y=-8}\]
when you subtract all of this what do you get? this shouldnt be too hard :)

Answer 9

0=0 infinte

Answer 10

x -y = -8

Answer 11

is that right ?

Answer 12

nope

Answer 13

the 2s cancel out so 0 and -8-8=0
therefore you get 0=0 that means infinte solutions