Question

help will give medal

Answer 1

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

y = x – 4
y = 2x – 3

What number should the equation y = x – 4 be multiplied by to eliminate x? (4 points)



–1
–2
–4
–6

Answer 2

@Godlovesme

Answer 3

So in the second eqn we have 2x right and in the first one we have x which means 1x

Answer 4

yes

Answer 5

so if we have 1x and 2x doesnt that mean we can solve for x ??

Answer 6

So in order to eliminate we need to change that x
So we would multiply with -2 which will give us -2x
So now we have -2x and 2x so if u add them u will get 0 and that's how u eliminate :)
Got it?

Answer 7

ya i think so so basically ur taking x - 2x = -2x ??

Answer 8

No I multiplied x by -2
U might be wondering where I got the -2 from ?
Well in the second eqn I have 2x which means the 2 is POSITIVE so I should multiply with the same # but different sign

Answer 9

then how do u get -2x from muliplying

Answer 10

-2 * 1x
-2 * 1 = -2 and u just bring the x down which will give u -2x

Answer 11

oh ok i get it

Answer 12

Great! :)

Answer 13

so the answer is -2 right ?

Answer 14

Yup!

Answer 15

mmk i have a few more

Answer 16

I'll try but I might leave unexpectedly , as always