The equation of the line is given as:

$y = 4x + 8$

In this equation, the general form is:

$y = mx + b$

Where:

• $m$ is the slope of the line,
• $b$ is the y-intercept, which is the value of $y$ when $x = 0$.

For the equation $y = 4x + 8$, the y-intercept is the constant term, which is 8.

Thus, the y-intercept is $\boxed{8}$.

Would you like to explore more about slope-intercept form or another related concept?

Here are some related questions for you:

1. How do you find the slope of a line given two points?
2. What is the significance of the slope in real-world applications?
3. How can you convert an equation in standard form to slope-intercept form?
4. What is the y-intercept for the line $y = -3x + 5$?
5. How do you graph a line given its equation?

Tip: The y-intercept is always the value of $y$ when $x = 0$, so you can find it directly from the equation in slope-intercept form $y = mx + b$.