To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled.

Write an equation using only one variable that could be used to solve for the constant of variation k.

To write an equation that relates the total population of animals to the size of the habitat (in acres) using the constant of variation k, we can use the formula:

Population = k * Habitat Size

In this equation, the population represents the total number of animals, and the habitat size represents the size of the habitat in acres. The constant of variation, k, represents the proportionality constant that relates the population to the habitat size.

By rearranging the formula, we can solve for the constant of variation k:

k = Population / Habitat Size

So, the equation using only one variable to solve for the constant of variation k is:

k = Population / Habitat Size