Question

Solve 2y+4x=8 for​y​. Thenfindthevalueof​y​foreachvalueof ​x​=-2,1,3. ​y​ = _____________________ (equation)

When x=-2, y=______ x=1, y=______ x=3, y=______

Answer 1

Answer: Answers below

Explanation:

`2y+4x=8`

Solve for y.

`2y+4x-4x=8-4x\\2y=8-4x\\y=(8-4x)/(2)`

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When x = -2; y = 8

`y=(8-4(-2))/(2)\\y=(8+8)/(2)\\ y=(16)/(2)\\ y=8`

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When x = 1 ; y = 2

`y=(8-4(1))/(2)\\y=(8-4)/(2)\\ y=(4)/(2)\\ y=2`

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When x = 3 ; y = -2

`y=(8-4(3))/(2)\\y=(8-12)/(2)\\ y=(-4)/(2)\\ y=-2`