The video tutorial covers various aspects of analyzing functions, focusing on their graphs. It explains the concepts of domain and range, how to identify them from graphs, and the importance of extrema. The vertical line test is introduced to determine if a relation is a function. The tutorial also discusses zeros of functions and how to identify intervals where functions are increasing, decreasing, or constant.

What is the domain of a function as derived from its graph?

• The highest point on the graph

• The set of all y-values used by the graph

• The set of all x-values used by the graph

• The lowest point on the graph

How is the range of a function determined from its graph?

• By identifying the x-values from left to right

• By calculating the area under the graph

• By finding the slope of the graph

• By identifying the y-values from top to bottom

What is a relative maximum on a graph?

• The lowest point on the graph

• The highest point on the graph

• A point where the graph changes from decreasing to increasing

• A point where the graph changes from increasing to decreasing

What does the vertical line test determine?

• If a graph is symmetrical

• If a graph represents a function

• If a graph is increasing

• If a graph has a maximum point

What indicates that a graph is not a function according to the vertical line test?

• A vertical line intersects the graph at more than one point

• A vertical line does not intersect the graph

• A vertical line intersects the graph at exactly one point

• A vertical line intersects the graph at the origin

What are the zeros of a function?

• Points where the graph intersects the y-axis

• Points where the graph has a minimum

• Points where the graph intersects the x-axis

• Points where the graph has a maximum

When is a function considered to be increasing?

• When the graph moves upwards as it goes from left to right

• When the graph moves downwards as it goes from left to right

• When the graph is flat

• When the graph has a maximum point

What does it mean for a function to be constant?

• The graph has a maximum point

• The graph is flat

• The graph has a negative slope

• The graph has a positive slope

How do you identify intervals where a function is decreasing?

• The graph moves upwards as it goes from left to right

• The graph moves downwards as it goes from left to right

• The graph is flat

• The graph has a minimum point

What is the significance of a slope of zero on a graph?

• The function is constant

• The function has a maximum point

• The function is increasing

• The function is decreasing