Question

x + 5y = -2

2x + y = 5

The point of intersection of the lines has a y-coordinate of ___.

Answer 1

set the equations equal to eachother.

Answer 2

so i would set it up as x+5y+2=2x+y-5
and then do like terms.

Answer 3

3x+6y-3

Answer 4

or wait, im sorry use the elimination or substitution methods.

Answer 5

I have never heard of this approach before. Don't you have to solve the system?

Answer 6

if you use elimination it would probably be easier.

Answer 7

x - y = 4

x + y = 8

The x-coordinate of the solution to the system shown is ___.
@Hope_nicole elimination

Answer 8

well, the x coordinate you would find by doing this:

Answer 9

It would have been easier to just add them outright and get rid of the y instead...

Answer 10

Find the value of \(x\) in the first equation:
\[x=4+y\]
Plug that into the second:
\[(4+y)+y=8\]
\[2y=4\]
\[y=2\]

Answer 11

im looking for the x-coordinate

Answer 12

That's right :)

Answer 13

2x + y = -2

x + y = 5

The x-coordinate of the solution to the system shown is ___.

Answer 14

@brittnicoleee_ , scroll up to the picture i put in, see if it makes sense

Answer 15

Subtract the second from the first like I showed you here:

\(2x+y=-2\)
\(-x-y=-5\)
----------
\(x+0=-7\)

Answer 16

2x + 3y = 6

5x + 2y = 4

Which of the following equations could be the result of multiplication and addition to eliminate a variable in the system of equations?