Math 4 Unit 2 Functions Test Class 1B

Front

What is correlation?

Back

Correlation measures the relationship between two variables. It can be positive, negative, or no correlation.

Front

Define negative correlation.

Back

Negative correlation occurs when one variable increases while the other decreases.

Front

Define positive correlation.

Back

Positive correlation occurs when both variables increase or decrease together.

Front

What is a function?

Back

A function is a relation that assigns exactly one output for each input.

Front

What is the composition of functions?

Back

The composition of functions f and g, denoted as g(f(x)), is the application of g to the result of f.

Front

Back

Front

What is a piecewise function?

Back

A piecewise function is defined by different expressions based on the input value.

Front

How do you graph a piecewise function?

Back

Graph each piece of the function according to its defined interval, using open or closed circles as needed.

Front

What does an open circle indicate on a graph?

Back

An open circle indicates that the point is not included in the function (i.e., the value is not part of the domain).

Front

What does a closed circle indicate on a graph?

Back

A closed circle indicates that the point is included in the function (i.e., the value is part of the domain).