Final answer:
The sign with a straight line connected to a diagonal line represents a direct relationship when graphing data in mathematics.
Step-by-step explanation:
The sign consisting of a straight line connected to a diagonal line represents a direct relationship when graphing data. It indicates that as one variable increases, the other variable also increases or decreases at a constant rate. For example, if we graphed the number of hours studied versus the test scores, a sign with a straight line connected to a diagonal line would suggest that as the number of hours studied increases, the test scores also increase at a consistent rate.
This concept is a fundamental topic in mathematics, specifically in the study of linear relationships and functions. It helps us understand how two variables are related and how they change together.
Graphically, a straight line with a positive slope demonstrates a positive direct relationship, while a straight line with a negative slope indicates a negative direct relationship.