Understanding Graphs and Functions

The video tutorial explains how to interpret a graph of a function, focusing on identifying input values that correspond to specific output values. It uses examples to demonstrate how to read the graph and find when the function equals a particular value, such as negative 2. The tutorial concludes by identifying the input value of negative 9 for which the function output is negative 2.

What does the x-axis represent in the graph of function g?

• The input values

• The output values

• The slope of the graph

• The y-intercept

If x equals 7, what is the output of the function g?

• 3

• 2

• 1

• 0

What is the output of g when x equals 9?

• 2

• 1

• 3

• 0

For which x value does g(x) equal 0?

• 8

• 9

• 7

• 6

What is the input value for which g(x) equals negative 2?

• -3

• -5

• -7

• -9

When g(x) equals negative 2, what is the corresponding y-coordinate?

• 2

• -2

• 0

• 1