Guided Notes 12.1
Evaluating Functions
Name: ________________________
Period: ___________
Directions: Given each graph, map, or set of ordered pairs, please find the information
requested.
#1.)
a.) Domain: ________________
1
-4
-4
0
2
0
3
#2.)
b.) Range: _________________
c.) –4 maps to ______________
d.) ____________ maps to 0
e.) Function ??? _____________
a.) Function ??? _____________
b.) When x = 1 the value of the function is:
c.) When x = 0 the value of the function is:
d.) Let’s shorten this and interpret f (-2) as
the value of the function when x = -2
so we know f ( -2 ) = ______
e.) f (- 4 ) = _____
#3.)
Domain Range
-3
-12
-2
-8
-1
-4
0
0
1
4
2
8
a.) Function ??? ______________
b.) X values = _______________
c.) Y Values = _______________
d.) f (-3) = ________________
e.) What operations are we performing on x
to get y ? Write this as an equation:
_________________________
#4.) Now consider the rule from the previous example.
a.) What is f (5) = _______________
b.) What is f (-10) = ______________
f (x) = 4x
c.) For what x value is f (x) = 24 ? x = ____