Functions

Functions

by Omar Shishani

Poll

Which Superpower would you rather have?

Multiple Choice

Jason, a waiter, expressed his customers’ bills and the tips they left him as the relation {(10, 2), (8, 1.5), (4, 1.25)}. Which table correctly expresses the relation?

Multiple Choice

Which expresses the relation {(–1, 0), (2, –4), (–3, 1), (4, –3)} correctly?

Multiple Select

How do you define a function?

• Each 1 element of the domain is connected to only 1 range element

• The line in the graph is linear and not curved

• There are no points in vertical of each others in the graph

• Each 1 element of the range must be connected to only 1 domain element

Multiple Choice

Determine the domain and range of the function

• D: {1, 2, 3}

  R: {352, 304, 391}

• R: {1, 2, 3}

  D: {352, 304, 391}

Multiple Choice

Write the data as a set of ordered pairs

• (1, 352), (2, 304), (3, 391)

• (1, 2), (2, 3), (352, 304)

• (352, 1), (304, 2), (391, 3)

Open Ended

How is the function useful?

​Just remember the Substitution property!!!

Multiple Choice

Find the function value:

f(3); if f(x) = x + 12

• 15

• 12

• 9

• 20

Multiple Choice

Find the function value:

f(6); if f(x) = 2x – 1

• 11

• 13

• 15

• 9

Multiple Choice

Find the function value:

f(– 7); if f(x) = –3x + 2

• 23

• -15

• 33

• -19

Multiple Choice

• 27

• 21

• 24

• 72

Multiple Choice

• 8

• -24

• 24

• -22

Multiple Choice

• 24

• -6

• 32

• 36

Multiple Choice

• 30

• 62

• 14

• 32

Multiple Choice

• -21

• 33

• 15

• -3