Question

Select the best possible first step to solving the following system by first eliminating the x variable.

2x + 5y = 1
x + 6y = –10

Answer 1

Multiply the second equation by 2.
Multiply the first equation by 2.
Multiply the first equation by –2.
None of the above

Answer 2

2x + 5y = 1
-2x - 12y = 20

Answer 3

-8y=21

Answer 4

i.e. Multiply the first equation by –2.

Answer 5

Multiply the second equation by -2

Answer 6

would the answer be none of the above? because none of those are choices