Question

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

5x – 3y = 1
7x – 4y = 2

Multiply the first equation by 3 and multiply the first equation by 4.

Multiply the first equation by –3 and multiply the second equation by –4.

Multiply the first equation by –7 and multiply the second equation by 5.

None of the above.

Answer 1

what does your gut tell you?

Answer 2

you must have some opinion on the matter, be it right or wrong ...

Answer 3

the question is designed to get you to think about what it is you would want to do .... to get you to think about the process. The answer itself is unimportant in the grand scheme of things

Answer 4

My opinion ... none of the choices provide any useful results

Answer 5

The third would benefit us if we were not confined to just eliminating the y variable; so at any rate, i would do that option first

Answer 6

Agreed

Answer 7

none of the above