What type of representation is a graph showing continuous values over time?

The representation that depicts continuous values over time is known as analog. Analog signals are characterized by their ability to vary smoothly and take on any value within a given range. This means that when you visualize an analog signal on a graph, you would see a line or curve that can rise and fall at any point, reflecting the continuous nature of the data.

In contrast to analog, digital representation consists of discrete values or states, typically represented as binary data (0s and 1s), which do not change smoothly over time but jump from one state to another. Discrete representation also indicates specific, separate values rather than a continuous range. Binary representation specifically refers to a format using two symbols (commonly 0 and 1), which is a subset of digital representation.

Therefore, the key characteristic of analog graphs is their continuous nature, which makes the distinction clear and confirms the choice as the appropriate representation type in this context.