Question

find the x and y value

x = 2 + y
-6x - 6y = -12

Answer 1

@rockinhood
if you can show your work this time so i can know how to do it because i have a test soon

Answer 2

This is system of equations correct?

Answer 3

Correct @AlyssaBlonde

Answer 4

Hmm.. I've never had a problem like this I'm afraid I can't help..

Answer 5

well, thanks for stopping by :(

Answer 6

Have you learned the substitution method of solving a system of equations?

Answer 7

ya, it was multiple choice when we learned so i would just plug in the choice they gave until it would work, but there is no multiple choice for this so i need help if you show your work i'd probably be able to understand it

Answer 8

Solve the first equation for x, then plug it in the second equation.

Answer 9

ya, but they both have to match smh

Answer 10

The substitution method works this way:
1. Solve one equation for one variable.
2. Substitute what the variable equals in the other equation.
3. Solve the other equation for one variable.
4. Substitute the known variable in one of the original equations to solve for the other variable.

Answer 11

Read about the substitution method above.
Then we'll use it together.

Answer 12

Are you ready?

Answer 13

i think

Answer 14

x = 2 + y
we can say x = 4 and y =2

Answer 15

so we solved this one
now if you plug in 4 and 2 into the other one it won't match
i can't keep guessing and guessing and trying different numbers till one works
there has to be a faster way D:
HELP!

Answer 16

I don't know. Let's follow the method, one step at a time.

1. We need to solve one equation for one variable.
The first equation is already solved for x, so step 1 is already done for us.

x = 2 + y

Answer 17

2. Since x = 2 + y, now we substitute x in the second equation with what x is equal to, 2 + y.

-6x - 6y = -12 <------ original second equation

-6(2 + y) - 6y = -12 <------ 2 + y was plugged in for x

Answer 18

3. Now we have one equation with only one variable, so we can solve for y.

-6(2 + y) - 6y = -12

-12 - 6y - 6y = -12

-12 - 12y = -12

-12y = 0

y = 0

Answer 19

and if y = 0 then x = 2

Answer 20

4. Now that we know that y = 0, we substitute y into either one of the original equations and solve for x.

x = 2 + y <---- first original equation

x = 2 + 0 <---- y was substituted with 0

x = 2

Solution: x = 2 and y = 0