What does it mean that the plane crosses the origin?

The image of the function passes through the coordinate origin.

When the independent variable of the function is 0, the function value is 0. For example, a linear function Y equals Kx+b, and when B equals 0, a straight line Y equals Kx passing through the coordinate origin. This is the application of space vector in space distance, which means that the origin is on this image, or the origin is substituted into the function expression to make the expression hold.

A plane equation passing through the origin means that a straight line or curve on the plane passes through the origin, that is, the intersection of coordinate axes. The plane passing through the origin is a knowledge point in seventh grade. It tests the distance calculation between points, lines and surfaces and the distance formula between two points in space, which belongs to basic questions.