Does the equation xy+7y=7 define y as a function of x?

Question

Does the equation xy+7y=7 define y as a function of x?

Answer 1

(x + 7) y = 7

y = 7 / (x + 7)

y is a function of x

Answer 2

it can be defined as a function of x by solving for y:::

xy+7y=7     ----  subtract xy over (((-xy)))

-xy    || -xy

7y = 7 - xy ---- then divide the y over

/ 7 || / 7            with (7- xy) / 7   the the 7 cancles out and leaves

y = -xy



then try to solve for y and it does not work

so it seems not

  

Answer 3

Yes!

y(x+7)=7

y=7/(x+7)

Answer 4

no, but you can simplify it to one.

y(x+7)=7

y=7/(x+7)

that is y as a function of x.

make it a good day