Question

A system of equations has 1 solution. If 4x - y = 5 is one of the equations, which could be the other equation?

O y=-4x + 5
y = 4x-5
2y = 8x - 10
-2y = -8x - 10

Answer 1

A: y = –4x + 5

Explanation:

I got it right on Edge

Answer 2

`4x -y = 5`

And if we rewrite this expression we got:

`y= 4x -5`

If the system have just one solution then we need the slope different and for this reason we can discard the options:

y = 4x-5

-2y = -8x - 10 equivalent to y =4x+5

2y = 8x - 10 equivalent to y = 4x -5

And then the correct answer would be:

y=-4x + 5

Explanation:

For this case we have the following equation given:

`4x -y = 5`

And if we rewrite this expression we got:

`y= 4x -5`

If the system have just one solution then we need the slope different and for this reason we can discard the options:

y = 4x-5

-2y = -8x - 10 equivalent to y =4x+5

2y = 8x - 10 equivalent to y = 4x -5

And then the correct answer would be:

y=-4x + 5