In the linear equation y = -3x – 6, the slope is

A recovering population of endangered frogs that scientists began monitoring in 1984 can be described by the equation p = 24t + 850, where: p is the total population, and t is the time in years since 1984.
How many frogs were there in 1984 when monitoring began?

Look again at the equation from Item #2 describing the recovery of population of endangered frogs: p = 24t + 850, where p is the total population and t is the time in years since 1984.
Which of the following ordered pairs does not represent a data point you would expect to see among the researchers’ data?

The equation y = 2x^{2} – 8 describes a linear relationship.

When a linear equation is graphed on the Cartesian coordinate system (x- and y-axes), it may be a straight line or a curve.

Which of the following scientific applications would NOT likely make use of a linear equation?

During the process of collecting and analyzing data, a scientist may *discover* a linear relationship between two variables and write a linear equation to describe it.

Which of the following equations would produce the graph pictured below?