Introduction to Functions

Introduction to Functions

Review

• Function- Each x value has only one y value. (x values don't repeat)

• Domain- x values. (input)

• Range- y values. (output)

Open Ended

What is the domain?

Open Ended

What is the Range?

Open Ended

Is this a function?

Fill in the Blanks

This graph_____ a function. Because x values _______ repeat.

Find values using Graphs

• Plot the point on the line with the x value

• Draw a straight line from this point to the y axis.

• What is the y value of this point?

Find values using graphs

• Plot the point of the y value on the graph

• Draw a straight line from this point to the x-axis

• What is the x-value at this point?

Multiple Choice

What is the y value where the x value is 6?

• 5

• 7

• 4

• 8

Multiple Choice

What is the x value when the y value is 5?

• 2

• 4

• 7

• 5