To determine the slope of the line given by the equation \( y = \frac{4}{5}x - 3 \), we can identify the slope directly from the equation.
In the slope-intercept form of a linear equation, \( y = mx + b \), \( m \) represents the slope and \( b \) represents the y-intercept.
In your equation:
- The coefficient of \( x \) (which is \( \frac{4}{5} \)) is the slope.
- The constant term (-3) is the y-intercept.
Therefore, the slope of the line is:
\[ \frac{4}{5} \]
The correct answer is:
\[ \frac{4}{5} \]