If the positive z-axis points upward, an equation for a horizontal plane through the point \left(3,2,4\right) is

A plane may be defined either by 3 space points or by a room point, and the direction perpendicular to the plane can be ascertained by a regularisation vector, and the further calculation can be defined as follows:

Suppose that n is the regular horizontal plane vector < 0, 0, 1>.

The point's coordination (3,2,4)

The general equation for an aircraft is:

The equation from point to point of a horizontal plane (3,2,4) is, therefore, z= 4

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