Question

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

4x - 5y = 4
3x + 2y = -20

Multiply the first equation by -2, and multiply the second equation by 5.

Multiply the first equation by 2, and multiply the second equation by -5.

Multiply the first equation by 2, and multiply the second equation by 5.

None of the above

Answer 1

you want the y-values to cancel out when you add the two equations so which set of values will make on y pos and one neg?

Answer 2

idk

Answer 3

@DominicNg @ikram002p @texaschic101

Answer 4

technically all the the options work
but the best option would be when you get
10y
- 10y like that

so what would you multiply by to get the equations like that?

Answer 5

I agree with @jigglypuff314

Answer 6

only 1 option works

Answer 7

pay attention to your signs

Answer 8

is it b

Answer 9

option b you would get
-10y
-10y

... oh wait... I'm confused :/
I'm not entirely sure what they want by "best first step"
"best first step" by addition?
or subtraction? >,<

Answer 10

it doesnt say

Answer 11

I would go with the 3rd option. This will eliminate the y's through addition