Final Exam Review 1 - Functions

Front

What is the profit equation for Sandra's necklace sales?

Back

The profit equation is P = 7.5n - (2.25n + 15).

Front

How much does Sandra charge for each necklace?

Back

$7.50

Front

What is a function?

Back

A function is a relation where each input has exactly one output.

Front

Is the mapping { (1,2), (2,3), (1,4) } a function?

Back

No, it is not a function because the input '1' has two different outputs.

Front

What is the equation for the fitness club membership after x months?

Back

y = 15x + 80.

Front

What does the slope represent in the equation y = mx + b?

Back

The slope (m) represents the rate of change of y with respect to x.

Front

What is the equation for Juanita's monthly cell phone bill?

Back

C = 15 + 0.20x.

Front

What is the domain of a function?

Back

The domain is the set of all possible input values (x) for the function.

Front

What is the domain of the graph given in the question?

Back

[-7, 5).

Front

What does the y-intercept represent in a linear equation?

Back

The y-intercept is the value of y when x = 0.