Final answer:
The set of all numbers greater than or equal to -6 is denoted as [-6, ∞), including -6 and all numbers larger than -6, extending to infinity.
Step-by-step explanation:
The set of all numbers greater than or equal to -6 is represented in mathematical notation as [-6, ∞). This set includes all real numbers from -6 to infinity. In interval notation, the square bracket next to -6 indicates that -6 is included in the set, while the parenthesis next to infinity indicates that infinity is not a number that can be reached but rather represents all numbers increasing without bound. As a number line representation, this would be a line extending from -6 to the right indefinitely. To visualize, imagine a number line where you highlight every point to the right of (and including) the point at -6.