Question

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

Answer 1

Answer:

$4x -y = 5$

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

Step-by-step 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