How to Identify an Increasing Linear Function

The video tutorial discusses increasing linear functions, starting with a question about identifying such functions from a set of graphs. It explains the definition of a linear function as a straight, non-vertical line on a coordinate plane and distinguishes between linear and non-linear graphs. The tutorial then focuses on identifying increasing linear functions by examining the slope of the line, concluding that a positive slope indicates an increasing function. The video ends with a summary of the key points and encourages continued learning.

What is the main question posed in the video regarding the graphs?

• Which graph represents a non-linear function?

• Which graph represents an increasing linear function?

• Which graph represents a constant function?

• Which graph represents a decreasing quadratic function?

What is a key characteristic of a linear function?

• It is a horizontal line.

• It is a straight non-vertical line.

• It is a straight vertical line.

• It forms a curve on the graph.

Which of the following graphs was identified as a parabola?

• Graph A

• Graph B

• Graph C

• Graph D

What defines an increasing linear function?

• A line with a negative slope.

• A line with a positive slope.

• A line that is horizontal.

• A line that is vertical.

Which graph was ultimately identified as the increasing linear function?

• Graph D

• Graph A

• Graph C

• Graph B