Question

Solve each system using substitution.

y= 3x +11
y= -2x +1

Answer 1

This means the same thing as y = 3x + 11 AND y = -2x + 1

Answer 2

hey! :)
3x+11=-2x+1
can you solve this?

Answer 3

So you can set them equal, as myininaya has done.

Answer 4

yea

Answer 5

:)

Answer 6

so all i havta to is solve that euation?

Answer 7

basically

Answer 8

solving that equation will give us x

Answer 9

and then when we get x we plug it into one of the equations given to find y

Answer 10

therefore finding the point of intersection (x,y)

Answer 11

so if you want to try to solve for x
i will do the same
and i can tell you if you are right
but if you run into trouble we can solve together okay?

Answer 12

Ok :)

Answer 13

3x+11=-2x+1
+2x +2x
5x+11=1
-11 -11
5x= 12
___ ____
5 5

Answer 14

so 1-11 is 12 ?

Answer 15

what is 11-1?

Answer 16

oh sryy

Answer 17

-10

Answer 18

perfect! :)

Answer 19

so we have 5x=-10

Answer 20

x= -2

Answer 21

brilliant! :)
now plug this into one of the equations given to find y
like this
y=3(-2)+11

Answer 22

i just replaced x with -2 since x=-2

Answer 23

now you are to simplify 3(-2)+11 to find y

Answer 24

y=6 ?

Answer 25

well 3(-2)+11 is y
i just mean simplify lol

Answer 26

-6+11=11-6=5 right?

Answer 27

right,

Answer 28

so y=5

Answer 29

(-2,5) correct?

Answer 30

that is totally correct

Answer 31

Thank you!! XD

Answer 32

if you had used the other equation you still would have got same thing by the way

Answer 33

great job! you get a medal!

Answer 34

Your the best!, thanks :D

Answer 35

I know.

Answer 36

Thanks. lol