How do you rewrite this equation so that y is a function of x -- 3x plus 5y equals 7?

Because of the limitations of the question software, it was not possible to determine what the original equation was supposed to be, so we assumed it is 3x + 5y = 7. It could have just as easily been 3x - 5y = 7, or even 3x/5y = 7.

So, let's solve them all for x.

3x + 5y = 7

3x = 7 - 5y

x = (7 - 5y)/3

How about 3x - 5y = 7?

3x - 5y = 7

3x = 7 + 5y

x = (7 + 5y)/3

And 3x/5y = 7?

3x/5y = 7

3x = 35y

x = 35y/3 Solving for y The above equations wrote the equation so that x is a function of y, not the other way around. Here's how to rewrite the equation so that y is a function of x: 3x + 5y = 7 5y = -3x + 7 y = (-3x + 7)/5