Bell Ringer
copy on separate note paper, not Bell Ringer sheet;
On Bell Ringer Sheet write: Parent Functions
Key words:
Parent Functions
Chapter 1.2
Common Core Algebra 2 Objectives
F-IF.5, F-BF.3
Identify parent functions from graphs
and equations.
Use parent functions to model realworld data and make estimates for
unknown values.
Example :
Identifying Transformations of Parent Functions
Identify the parent function for g from its function rule. Then graph g
on your calculator and describe what transformation of the parent
function it represents.
g(x) = x – 3
x has what power ?
What is the parent function ?
Example :
Identifying Transformations of Parent Functions
Identify the parent function for g from its function rule. Then graph
on your calculator and describe what transformation of the parent
function it represents.
g(x) = x2 + 5
Parent function ?
Domain ?
Range ?
x has a power of ?
Example
Identify the parent function for g from its function rule. Then graph
on your calculator and describe what transformation of the parent
function it represents.
g(x) = x3 + 2
x has a power of ?
Parent function ?
Students work in pairs, I will pick teams. One student in
each pair should choose a function belonging to a family
described in this lesson. This student should give his or
her partner the coordinates of points that lie on the
function’s graph. The partner should plot the points until
her or she can determine the parent function.
The given equation is not the parent function; it is a
translation of the parent. Complete one, then switch
positions.
Exit question
Identify the parent function for g from its function
rule. Then graph g on your calculator and describe
what transformation of the parent function it
represents.
g(x) = x2 – 7
Domain ?
Range ?
Bell Ringer
Identify the parent function for g from its function
rule. Then graph g on your calculator and describe
what transformation of the parent function it
represents. Include the domain and range.
2
g(x) = 2x + 5
Exit question
Stacy earns $7.50 per hour. Graph the relationship
from hours to amount earned and identify which
parent function best describes it. Then use the
graph to estimate how many hours it would take
Stacy to earn $60.
Answer only
required