Which is a non-linear relationship?

Question

y = 3, x = 7, x + y = 12^2, 2x-4=y^2

Answer 1

2x-4=y^2

A linear relationship has all variables to the first power only, and does not contain the product of one or more variables

Answer 2

y = 3, x = 7, x + y = 12^2, 2x-4=y^2

A non-linear relationship exists when x or y has an exponent greater than 1.

Therefore, in the 4 equations given above, 2x-4=y^2 is a non-linear relationship since y has an exponent of 2.

Answer 3

2x-4=y^2

because y has exp of two

Answer 4

The last one:  2x - 4 = y²

A linear relationship can be written in this form:

Ax + By + C = 0, where A, B and C are not all zero.

Hope this helps!