It is an equation in which one of the terms is the instantaneous rate of change in one variable, with respect to another (ordinary differential equation). Higher order differential equations could contain rates of change in the rates of change (for example, acceleration is the rate of change in the rate of change of displacement with respect to time). There are also partial differential equations in which the rates of change are given in terms of two, or more, variables.
For each of the following relationships, graph the proportional relationship between the two quantities, write the equation representing the relationship, and describe how the unit rate, or slope is represented on the graph.
A banana is a very good example of a nonexample. It has nothing whatsoever to do with rates, and so nothing to do with unit rates.
Factoring rates apply to the practice of businesses selling receivables at a discount to a factor, who then collects the funds. The factoring rate is the amount of the discount at which the receivable is purchased.
Yes, they do. Rates are always expressed as "this much of one thing TO that much of another". It is then expressed as a ratio of "this" over "that" (or with a colon instead).
A proportion
proportion
proportion
It is called a proportion.
Proportion
scale factor
It is a/b = c/d
A proportion is a statement that two ratios or rates are equal.
Rates are ratios ... Speed is a rate of distance per unit of time... ratio of distance to time. Proportions are two equal ratios, whether they are rates or not.
An equation that sets two fractions equal to each other is called a proportion. In a proportion, the cross products of the fractions are equal. For example, if you have the proportion ( \frac{a}{b} = \frac{c}{d} ), then ( ad = bc ). Proportions are commonly used in solving problems involving ratios and rates.
Rate1 = Rate2, I suppose.
Rates are ratios that are renamed so that one of the numbers is 1. It is usually the denominator of the original ratio.