The slope of a linear equation in the form \(y = mx + b\) is represented by \(m\), where \(m\) is the coefficient of \(x\).
In the equation \(y = -\frac{2}{3}x + 5\), the coefficient of \(x\) is \(-\frac{2}{3}\).
Therefore, the slope of the line is \(-\frac{2}{3}\).