Which set of points lies within plane l?

To determine which set of points lies within plane ( l ), you need to check if the coordinates of each point satisfy the plane's equation. A point ((x, y, z)) lies in the plane if it fulfills the equation of the plane, typically expressed in the form ( Ax + By + Cz + D = 0 ). By substituting the coordinates of the points into this equation, you can identify which points lie within the plane. Points that make the equation true are considered to be on or within the plane.