Best Answer

4x + 2y = 12

3x - 2y = 9 Have to use simultaneous equations, so add together to get :

7x = 21

so x = 3 Put it into any part of the equation

4x3 + 2y = 12

12 + 2y = 12

2y = 0

y = 0, x = 3

Q: Answer for 4x plus 2y equals 12 3x-2y equals 9?

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4y+4 = 2y+12 4y-2y = 12-4 2y = 8 y = 4

-2

Both of them are equations!The solution is (x, y) = (2, 1).

2x+y=-12-4x-2y=30 x=-y/2+30, you plug this into -12-4x-2y=30 and get -12+2y-120-2y=30 which gives 2y-2y=162. This is not possible, so the equation is unsolvable.

4

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4y+4 = 2y+12 4y-2y = 12-4 2y = 8 y = 4

-2

Both of them are equations!The solution is (x, y) = (2, 1).

what is the slope of the line that has the equation 4x+2y=12?

2x+y=-12-4x-2y=30 x=-y/2+30, you plug this into -12-4x-2y=30 and get -12+2y-120-2y=30 which gives 2y-2y=162. This is not possible, so the equation is unsolvable.

-65

4

Y= 1/4.

4y + 4 = 2y + 12Subtract 2y from each side of the equation:2y + 4 = 12Subtract 4 from each side:2y = 8Divide each side by 2:y = 4

(12, 1)

x = -8, y = 10

They are straight lines.