Front

What is a function?

Back

A function is a relation where each input (x-value) has exactly one output (y-value).

Front

How can you determine if a graph represents a function?

Back

A graph represents a function if any vertical line drawn through the graph intersects it at most once.

Front

What does it mean if a graph is 'not a function'?

Back

A graph is 'not a function' if there exists at least one vertical line that intersects the graph at more than one point.

Front

Solve the equation: |2x + 9| = 15

Back

x = 3 or x = -12.

Front

What is a mapping in mathematics?

Back

A mapping is a relation that pairs each element of one set with an element of another set.

Front

How can you tell if a mapping is a function?

Back

A mapping is a function if each input is paired with exactly one output.

Front

What is the difference between discrete and continuous data?

Back

Discrete data consists of distinct, separate values, while continuous data can take any value within a range.

Front

Give an example of a discrete graph.

Back

A graph showing the number of students in different classes (e.g., 20 students in Math, 25 in Science).

Front

Give an example of a continuous graph.

Back

A graph showing the height of a plant over time, which can take any value.

Front

What is the vertical line test?

Back

The vertical line test is a method to determine if a graph is a function by checking if a vertical line crosses the graph more than once.