## y-intercept

### The y-intercept is a point on a graph where a line or a curve intersects the y-axis

The y-intercept is a point on a graph where a line or a curve intersects the y-axis. In other words, it is the value of the dependent variable (y) when the independent variable (x) is equal to zero.

For a linear equation in the form of y = mx + b, where m is the slope and b is the y-intercept, the value of b represents the y-coordinate of the point where the line crosses the y-axis.

To find the y-intercept of a given equation, you can set x equal to zero and solve for y. For example, let’s say we have the equation y = 2x + 3. If we set x = 0, the equation becomes y = 2(0) + 3, which simplifies to y = 3. Therefore, the y-intercept of this equation is (0, 3), meaning the line crosses the y-axis at the point (0,3).

The y-intercept can provide important information about the behavior of a graph, such as where the function “starts” or crosses the vertical axis. It is often useful in determining the initial condition or position when analyzing various mathematical models or equations.

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