Y=2x

x+3y=-14 use substitution method

x=-2, y=-4

Step-by-step explanation:

y=2x

x+3y=-14

In the second equation equation replace y with 2x

x+3y = -14

x + 3 (2x) = - 14

x+6x = - 14

Combine like terms

7x = -14

Divide by 7

7x/7 = - 14/7

x = - 2

Now we can find y

y = 2x

y = 2 (-2)

y = - 4

x = - 2 and y = - 4 and (-2, - 4)

Step-by-step explanation:

Step 1: Set y to 2x in the second equation

x + 3y = - 14

x + 3 (2x) = - 14

x + 6x = - 14

Step 2: Combine like terms

x + 6x = - 14

7x = - 14

Step 3: Divide both sides by 7

7x / 7 = - 14 / 7

x = - 2

Step 4: Plug in - 2 for x in the first equation

y = 2x

y = 2 (-2)

y = - 4

(-2, - 4)

Answer: x = - 2 and y = - 4 and (-2, - 4)