function
domain: \{x | x \leq -3 \text{ or } x \geq 3\}
A range: all real numbers
intercepts: (-3, 0), (3, 0)
symmetry: x-axis, y-axis, origin
B not a function
function
domain: \{x | -3 \leq x \leq 3\}
C range: all real numbers
intercepts: (-3, 0), (3, 0)
symmetry: x-axis, y-axis
function
domain: all real numbers
D range: \{y | y \leq -3 \text{ or } y \geq 3\}
intercepts: (-3, 0), (3, 0)
symmetry: y-axis
