Evaluating Functions from Graphs

The video tutorial explains how to evaluate functions using a graph. It begins with an introduction to the concept of functions and their representation on a graph. The instructor demonstrates how to find y-values for given x-values and vice versa. The tutorial also covers how to handle cases where points do not exist on the graph. A bonus section explores reverse evaluation, finding x-values for given y-values.

What is the function f(x) formerly known as?

• z

• y

• w

• v

What do you get when you input an x-value into the function?

• Another x-value

• A z-value

• A w-value

• A y-value

What is the y-value when x is -2?

• 1

• 2

• 3

• 4

What is the y-value when x is 0?

• 3

• 2

• 1

• 4

What is the y-value when x is 2?

• 1

• 4

• 2

• 3

What is the y-value when x is 5?

• 3

• 2

• 1

• 4

What happens when you try to find the y-value for x = -4?

• The function is 1

• The function is 2

• The function is 0

• The function does not exist

In the bonus round, what y-value are we given to find the corresponding x-value?

• 4

• 3

• 2

• 1

What is the x-value when y is 2 in the bonus round?

• 3

• 0

• 1

• 2

What is the function f(x) used for in this tutorial?

• To find v-values

• To find z-values

• To find w-values

• To find y-values