The y-intercept is the point where a graph intersects the y-axis. In other words, it is the value of $y$ when $x = 0$ in a given equation. For a linear equation in slope-intercept form, $y = mx + b$, the y-intercept is the constant $b$.

For example:

• In the equation $y = 2x + 3$, the y-intercept is 3, meaning the graph crosses the y-axis at $(0, 3)$.

Would you like more details or further examples?

Here are 5 related questions to explore:

1. How do you find the y-intercept from a table of values?
2. What is the relationship between the slope and the y-intercept in a linear equation?
3. How do you find the y-intercept of a quadratic function?
4. Can a line have more than one y-intercept? Why or why not?
5. What