FunctionsChap4notes2016.notebook
October 19, 2016
Bellwork
Write each in slope intercept form:
2.) 5x + 2y = 10
1.) 3x - y = 8
Nov 26­7:48 AM
Day 1
I. Functions
A.) Relations
Definition:
Examples
mappings
ordered pairs
table
B.) Function
Definition:
Examples
{(1,2), ( 3,6), ( 4,7)}
{(1,3) ( 2,3), (4,3)}
Oct 7­2:28 PM
1
FunctionsChap4notes2016.notebook
October 19, 2016
Notations
y = mx + b
f(x) = mx + b
f: x ⇒3x - 4
C.) Vertical Line Test
D.) Domain
E.) Range
Oct 7­2:30 PM
Examples...
1.) Determine if { (-1,8), (0,8), (3,5)} is a function. If so state its
domain and range
Oct 7­2:34 PM
2
FunctionsChap4notes2016.notebook
October 19, 2016
F.) Evaluating Functions
1.)
Let f(x) = 4x ­ 5
Find f(3)
Find f(­4)
Find f(x + 3)
Find f(x2)
2.)
Let g: x ­3x² ­ x
Find g(­1)
Find g(5)
Find g(x­1)
Oct 1­7:40 AM
3