11.1 Coordinate Axes and Coordinate Planes

Point $(2, -3, 4)$:

• $x$ is positive (+)
• $y$ is negative (-)
• $z$ is positive (+)
• Looking at the pattern $(+, -, +)$, this corresponds to Octant IV.

Point $(-1, -2, -5)$:

• $x$ is negative (-)
• $y$ is negative (-)
• $z$ is negative (-)
• Looking at the pattern $(-, -, -)$, this corresponds to Octant VII.