Question

Ellason wants to solve the following system using the elimination method:

5x + 2y = 30
x + y = 8

What number should the equation x + y = 8 be multiplied by to eliminate y?

2
−2
5
−5

Answer 1

IK it isn't C.5

Answer 2

if you have 2y and you want 0 of them , how many y's do you take away ?

Answer 3

-2

Answer 4

yes, you would want to add -2y to the +2y

Answer 5

wait so that's the answer?

Answer 6

the question is how do you get the y in the bottom equation to have a -2y ?
what number would you multiply by to make y into -2y ?

Answer 7

idk

Answer 8

1*y = 1y
2*y is 2y

3*y is 3 y

what * y is -2y ?

Answer 9

-2

Answer 10

yes, -2 times y is -2y

Answer 11

and if you add the two equations , the 2y in the top plus the -2y in the bottom
is 2y's take away 2 y's and that makes 0 y's
i.e. the y is eliminated

Answer 12

so the answer is B.-2

Answer 13

yes

Answer 14

thx