Does the Graph Represent a Linear Function?

The video tutorial reviews how to identify a linear function by analyzing graphs. It begins with a question about which graph represents a linear function, followed by a prompt to pause and reflect. The definition of a linear function is provided, emphasizing that it is a non-vertical line. The video then analyzes different graphs, concluding that a horizontal line is the correct representation of a linear function. The tutorial ends with a recap of the key points and a reminder of the definition.

What is the main question posed at the beginning of the video?

• How to find the area of a circle?

• Which graph represents a linear function?

• How to solve quadratic equations?

• What is the slope of a line?

According to the video, what is a key characteristic of a linear function's graph?

• It is always a vertical line.

• It is a curved line.

• It is a straight line that is not vertical.

• It is a line that changes direction.

Why can't a vertical line be considered a linear function according to the video?

• Because it does not have a slope.

• Because it is vertical.

• Because it is not horizontal.

• Because it is not straight.

Which graph option was identified as representing a linear function?

• Option D: Another curved line

• Option C: Horizontal line

• Option B: Vertical line

• Option A: Curved line

What is the concluding message about linear functions in the video?

• A linear function is a line that is always horizontal.

• A linear function is a line that is not vertical.

• A linear function is a line that is always vertical.

• A linear function can be any shape.