Question

Which eqation is equivalent to 3x + 4y = 15

A) y=15-3x
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4

B) y=3x-15
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4

C) y=15-3x

D) y=3x-15

Answer 1

`y=(15-3x)/(4)`

Explanation:

Here we are given an equation in x and y and we are required to solve it for y

we have

`3x+4y=15`

subtracting 3x from each sides we get

`3x-3x+4y=15-3x`

`4y=15-3x`

now we divide both sides by 4 we get

`y=(15-3x)/(4)`

Hence A) is our right answer.