2x+y=-4 and 4x-2y=8
how many solutions?

Question

anonymous · Answer

ans is x =0 , y=-4

anonymous · Answer

2x + y = -4

y = -2x - 4

4x - 2y = 8

2y = 4x - 8

y = 2x -4

1 solution

anonymous · Answer

so two solution

anonymous · Answer

It's one solution (0, -4), right?

anonymous · Answer

no its two bcas two variable so two solution ...got it ...

anonymous · Answer

No, it's one solution because (0,-4) is one order pair.

anonymous · Answer

how do i know its on ordered pair?

anonymous · Answer

Okay, so when you work out a solution to your problem and you end up with the sum of 2 variables, those are your ordered pair.

For example,
If
a=2
b=3
Your order pair would be (2,3)
Basically, you have (a,b) or whatever given variable
Then you work out your equation, then plug the numbers into the variables. 
Get it?