Question

The system of equations is coincident.

What are the missing values?

http://static.k12.com/bank_packages/files/media/mathml_f6e7082b73d24e3df1288c9d50654c077c65189a_1.gif
4x + _____ y = _____

Answer 1

i think its 4x + 4y = 7

Answer 2

@AbbySmith12

Answer 3

@NormaValenzuela

Answer 4

@sleepyjess

Answer 5

I can't get into the link,,,it keeps saying file not found. Can you just write the problem ?

Answer 6

@texaschic101 here is the real link: http://static.k12.com/bank_packages/files/media/mathml_f6e7082b73d24e3df1288c9d50654c077c65189a_1.gif

Answer 7

yes thats the link

Answer 8

wait....I kinda messed up on the first part....you do not have to put it in standard form, it already is in standard form

x + 3y = 5 --- multiply by 4
4x + 12y = 20


check..
4x + 12y = 20 -- divide by 4
x + 3y = 5 (correct)

same answer : 4x + 12y = 20

Answer 9

how'd u get 12

Answer 10

@texaschic101

Answer 11

ok...we have x + 3y = 5.....we need 4x + ?y = ?.....so we multiplied the first equation by 4. This will make the lines coincident (the same)
4(x + 3y = 5) = 4x + 12y = 20
and to see if it is the same line...we can reduce it by dividing each term by 4, and we would get : x + 3y = 5

Its kinda the same as equivalent fractions..
2/3...multiply it by 3/3 and we get 6/9....they equal the same, therefore are equivalent. Same thing as the equations....x + 3y = 5 and 4x + 12y = 20...they are the same line

Answer 12

x + 3y = 5 would also be the same line as 3x + 9y = 15....I just multiplied it by 3

Answer 13

does this make any sense to you ?

Answer 14

times 4 by what

Answer 15

4 by 3?

Answer 16

and get 12

Answer 17

x + 3y = 5......we want the x to be the same as the 4x in the other equation. To do this, we multiply the entire 1st equation by 4.

4(x + 3y = 5) = 4x + 12y = 20

Answer 18

4 * x + 4 * 3y = 4 * 5
4x + 12y = 20

Answer 19

If your problem would have been : find a coincident line for x + 3y = 5 and you were given : 2x + ?y = ?
Then we would multiply 1st equation by 2 and get :
2(x + 3y = 5) = 2x + 6y = 10
understand ?

Answer 20

ya