Chapter 11
A point is on the x-axis. What are its y-coordinate and z-coordinates?
A point is in the XZ-plane. What can you say about its y-coordinate?
Name the octants in which the following points lie: (1, 2, 3), (4, -2, 3), (4, -2, -5), (4, 2, -5), (- 4, 2, -5), (- 4, 2, 5), (-3, -1, 6) (- 2, - 4, -7).
Fill in the blanks: (i) The x-axis and y-axis taken together determine a plane known as_______. (ii) The coordinates of points in the XY-plane are of the form _______. (iii) Coordinate planes divide the space into ______ octants.