Final answer:
A linear association is a relationship that can be described by a straight line, either algebraically or graphically.
Step-by-step explanation:
A linear association is a type of relationship that can be defined algebraically or graphically as a straight line. Algebraically, a linear equation is typically in the form y = mx + b, where m and b are constants, x is the independent variable, and y is the dependent variable. The constant m, called the slope, describes the rate of change between the independent and dependent variables. Graphically, a linear association is represented by a straight line on a graph.