Chapter 8.2, Problem 1OE

To determine

To express: Each equation as a variation (in words).

Answer to Problem 1OE

The equation is expressed as a variation as follows:

P varies jointly as s and t.

Explanation of Solution

Given information:

The following equation:

  $P=kst$

where k is a constant and other letters are variables.

The equation $P=kst$ is expressed as a variation as follows:

P varies jointly as s and t.

When a quantity varies directly as the product of two or more other quantities, the variation is called joint variation.