I
input/output
name: saniyyan
lewis
_ date: 10-70
period: 3a
the keypad on sam's cell phone is shown at right. as you can see,
there is a relationship between the letters and numbers. when
sam writes a text message, he thinks of the letter in the
word he is typing and presses the correct numbered key.
x
1. complete this table to show the relation from letter to number
letter a b c d e f g h i j k l m n o p q r s tulvwlxyz
number 2 2 2 3 3 3 4 4 455 56664778/3/8/9/7
2. what is the domain of this relation?
3. what is the range of this relation?
i
t o number n function? explain using appropriate vocabulary