Final answer:
A line graph is considered a linear text because it typically uses straight lines to show a relationship between two variables measured on the horizontal and vertical axes, illustrating trends over time.
Step-by-step explanation:
The term "linear" when referring to texts in mathematics typically describes something that is straight or follows a constant pattern without deviations or fluctuations. On the other hand, "non-linear" implies complexity or variation that does not follow a straight path or consistent pattern. Line graphs are a form of data representation in mathematics that are considered linear because they show the relationship between two variables using a straight line that connects data points on a plane.
Examining a line graph, one can analyze and interpret trends or patterns over a period of time. These graphs are particularly useful when looking to display how a variable changes in response to another, often time. The standard format for a line graph measures one variable on the horizontal axis (typically time) and another on the vertical axis (such as temperature, price, quantity, etc.).
If we were to classify the line graph as either linear or non-linear, it would be classified as a linear text. This designation fits because a line graph can be used to visually represent a linear relationship between the two variables, often leading to the derivation of a linear equation that describes the data.