Question

solve using elimination
y=3x+4
y=2x+2

Answer 1

x=-2/3
y=2/3

Answer 2

Need work?

Answer 3

yes please:)

Answer 4

they are both y, set the right hands sides equal

Answer 5

3x+4
-2(2x+2) eliminate the 4
-------


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

then right solve it from here right?

Answer 6

i got -2 idk if its right

Answer 7

its almost like a regular subtraction problem
but you have to make 1 term (any 1 you want)
equal to the additive inverse to eliminate it

3x+4
-2(2x+2) eliminate the 4 i find is the easiest
-------

Answer 8

is it -2?

Answer 9

wow that is so much work
\[y=3x+4=2x+2\]
subtract \(2x\) from both sides get
\[x+4=2\]
subtract 4 from both sides get
\[x=-2\]

Answer 10

yep

Answer 11

Thanks All =)

Answer 12

there were other ways but it was elimination

Answer 13

if you see
\[y=\text{expression}\] and \[y=\text{another expression}\] it is correct to set them equal and solve, and frankly somewhat silly to use another method. (i am not saying you weren't asked to, just that it is silly)