Question

Does y =9?
4x + 3y = -1
3x + y = 3

Answer 1

How did you do it? Show workl @aleximhappy08

Answer 2

-8+3y=-1 --> 3y=8+1 --> 3y=9 -->y=3
-6+y=3 -->y=3+6 -->y=9
I'm not sure which is right I solved for x and got -2

Answer 3

if you are using 9 for y then you plug the 9 in for y so it would be 4x+3(9)=-1

Answer 4

then once you solve that you will get \[4x+3(9)=-1\]
\[4x+27=-1\]

Answer 5

x=6.5

Answer 6

and then if you plug in 9 for the second equation x=-2

Answer 7

I'm confuseed. If you use the elimination property to solve for x then x should equal -2

Answer 8

4x + 3y = -1 -->(3)
3x + y = 3-->(-4)
---------------------
12x + 9y = -3
-12x -4y = -12
------------
5y = -15
y = -3

Answer 9

Ohhhhh

Answer 10

Then x would equal? -2?

Answer 11

4x + 3y = -1
4x + 3(-3) = -1
4x -9 = -1
4x = -1 + 9
4x = 8
x = 2

Answer 12

We put the value of x in the original equation (1) and solve for y.

Answer 13

So its positive not negitive. Okay

Answer 14

check it....
4x + 3y = -1
4(2) + 3(-3) = -1
8 - 9 = -1
-1 = -1 (correct)
x = 2, y = -3

Answer 15

any questions ?

Answer 16

No actually thanks!

Answer 17

your welcome....you could have also solved by substitution

Answer 18

true....