Ok its substitution y=4x-1 and y=2x-5?

Question

how do i do it?

Answer 1

if y=4x-1 and y=2x-5, then 4x-1=2x-5.

Subtract 2x from each side of the equation:

4x-2x-1=2x-2x-5 to get 2x-1=-5

Add 1 to each side of the equation:

2x-1+1=-5+1 to get 2x=-4

Divide each side of the equation by 2 and you get:

2x/2=-4/2 to get x=-2

Plug -2 back into eather original equation to get y:

y = 4 * (-2) - 1   to get y=-9

Plug the values you got for x and y back into BOTH original equations to check your answers.  If BOTH equations work out then you know your answers are correct.

Answer 2

y = y

y=4x-1 and y also equals 2x-5

Therefore 4x-1 = 2x-5

Subtract 2 x from both sides

4x-2x -1 = 2x -2x- -5

2x-1 = -5

Add 1 to both sides

2x-1+1=-5+1

2x=-4

Divide both sides by 2

2x÷2 = -4 ÷ 2

x = -2

Answer 3

ok, so the problem would simplify to

2x-5 = 4x-1

subtract 2x from both sides so...

-5 = 2x - 1

add 1 to both sides

-4 = 2x

divide 2 by both sides

-2 = x

Answer 4

y=4x-1 and y=2x-5, so 4x-1=2x-5

put all x'es to the left and the constants to the right:

4x-2x = -5+1

so 2x = -4

x = -2

Answer 5

dang i tried but i just don't remember how to do it.

Answer 6

x= -2

y = 4x-1

y = 2x-5

4x-1 = 2x-5

2x-1 = -5

2x = -4

x = -2