It looks like the equation you provided is written as \( y = -2x - 4 \).
In this form, where the equation is in the slope-intercept format \( y = mx + b \) (with \( m \) being the slope and \( b \) the y-intercept), you can directly identify the y-intercept.
Here, the y-intercept \( b \) is \(-4\).
So, the y-intercept of the line is \(-4\).