Substitute for y=4x-1; y=2x-5

You can say 2x - 5 = 4x - 1 ⇒ 2x - 4x = 5 - 1 ⇒ - 2 x = 4 ⇒ x = - 2 and y gonna be

y = - 4 - 5 = - 9 : D

y=4x-1; y=2x-5

Step: Solve y=4x-1 for y:

Step: Substitute 4x-1 for y in y=2x-5:

y=2x-5

4x-1=2x-5

4x-1+-2x=2x-5+-2x (Add - 2x to both sides)

2x-1=-5

2x-1+1=-5+1 (Add 1 to both sides)

2x=-4

2x/2=-4/2 (Divide both sides by 2)

x=-2

Step: Substitute-2 for x in y=4x-1:

y=4x-1

y = (4) (-2) - 1

y=-9 (Simplify both sides of the equation)

Answer:y=-9 and x=-2