Understanding Functions and Graphs

Charlene explains how to find the domain and range of discrete points on a graph. She describes the difference between discrete and continuous graphs, emphasizing that discrete graphs have countable points. The video covers identifying coordinates, determining domain and range, and verifying if a set of points is a function using the vertical line test. The video concludes with a call to action to subscribe.

What does the domain of a graph represent?

• The y-values of the graph

• The slope of the graph

• The intercept of the graph

• The x-values of the graph

What is the range of a graph?

• The slope of the graph

• The intercept of the graph

• The y-values of the graph

• The x-values of the graph

What is the domain of a function?

• The set of all possible y-values

• The intercept of the function

• The set of all possible x-values

• The slope of the function

What is the range of a function?

• The slope of the function

• The set of all possible y-values

• The intercept of the function

• The set of all possible x-values

How is a discrete graph different from a continuous graph?

• A discrete graph has a finite number of points

• A discrete graph has an infinite number of points

• A discrete graph is a straight line

• A discrete graph is a curve

What is a characteristic of a discrete graph?

• It has distinct, countable points

• It has no points

• It has a continuous line

• It forms a parabola

What is a characteristic of a continuous graph?

• It forms a straight line

• It has no points

• It has distinct, countable points

• It has an infinite number of points

How do you identify the coordinates of a point on a graph?

• By counting the number of points

• By finding the slope

• By identifying the x and y values

• By finding the intercept

What is the x-coordinate of a point located at (2, 3)?

• 2

• 5

• 3

• 0

What is the y-coordinate of a point located at (2, 3)?

• 2

• 3

• 5

• 0