Question

which of the following best describes a variable? a. a trend that shows an exponential relationship b. something whose value can change over multiple measurements c. a measure of how much a plot line changes along the y - axis d. something that remains constant over multiple measurements

Explanation:

A variable is a quantity whose value can vary or change. Option b correctly defines a variable as something whose value can change over multiple measurements. Option a describes an exponential - relationship trend, not a variable. Option c describes the change along the y - axis which is related to slope or change in a function, not the general concept of a variable. Option d describes a constant, not a variable.

Answer:

b. something whose value can change over multiple measurements