Final answer:
The statement that the term proportional is used to indicate that one thing is a multiple of another is true. Proportionality involves ratios or rates typically expressed with a proportionality constant, illustrated with direct relationships such as y = kx or through equivalent ratios that form proportions like 1/2 = 3/6.
Step-by-step explanation:
The term proportional is used to indicate that one thing is a multiple of another. The statement is true. When we say that something is proportional to another, we typically express this relationship using ratios or rates. For example, if y is directly proportional to x, this can be represented as y = kx where k is the proportionality constant. If the quantity y changes in direct response to x, and this change is consistent, they are considered directly proportional.
When two ratios are equivalent, we have created a proportion, such as 1/2 = 3/6. A unit rate is a type of ratio where one term is compared to 1, like 55 miles/1 hour, which is the same as 55 miles per hour. In the context of maps or scale drawings, a unit scale is used to compare the dimensions of a model to the actual object it represents, for instance, 1 inch = 100 feet.