Algebra I Review 9/20-9/21

Front

What is an independent variable?

Back

An independent variable is a variable that represents the input or cause in a function. It is the variable that is manipulated to observe its effect on the dependent variable.

Front

What is a dependent variable?

Back

A dependent variable is a variable that represents the output or effect in a function. It depends on the independent variable.

Front

What is the domain of a function?

Back

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

Front

What is the range of a function?

Back

The range of a function is the set of all possible output values (y-values) that the function can produce.

Front

Identify the independent variable in the context of a money-raising event.

Back

The independent variable is typically the number of boxes sold, as it is the factor that is changed to see how it affects the money collected.

Front

Identify the dependent variable in the context of a money-raising event.

Back

The dependent variable is the money collected, as it depends on the number of boxes sold.

Front

How do you find f(-3) if f(x) = 5x + 2?

Back

To find f(-3), substitute -3 for x: f(-3) = 5(-3) + 2 = -15 + 2 = -13.

Front

What does it mean if x ≥ -3 in a function?

Back

It means that the input values (x) can be -3 or any number greater than -3.

Front

What is a function?

Back

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

Front

What is a relation in mathematics?

Back

A relation is a set of ordered pairs, where each pair consists of an input and an output.