To determine whether the equation \(7x^2 + y = 5\) represents a linear or nonlinear function, we consider the characteristics of linear equations. A linear equation can be expressed in the form \(y = mx + b\), where \(m\) and \(b\) are constants.
In this case, the term \(7x^2\) indicates that \(x\) is squared, which means the equation represents a quadratic function, not a linear one.
Therefore, the correct response is:
The function \(7x^2 + y = 5\) is a nonlinear function.