
(a)
To Find:The model for each transformation of the graph f(x)=x .
(a)

Answer to Problem 5CA
g(x)=1(x−(−3))+2
Explanation of Solution
Given:The graph is a translation 2 units up and 3 units left.
g(x)=....(x−....)+.... .
The translation 2 units up involves adding 2 units to the function and translation 3 units left involves subtracting 3 units .
Thus
f(x)=xg(x)=f(x)+2g(x)=x+2g(x)=(x−(−3))+2thusg(x)=1(x−(−3))+2
Hence, g(x)=1(x−(−3))+2 .
(b)
To Find: The model for each transformation of the graph f(x)=x .
(b)

Answer to Problem 5CA
g(x)=1(x−2)+(−3)
Explanation of Solution
Given: The graph is a translation 2 units right and 3 units down.
g(x)=....(x−....)+.... .
The translation 2 units right involves subtracting 2 units to the variable and translation 3 units down involves subtracting 3 units to the function value.
Thus
g(x)=f(x−2)g(x)=x−2g(x)=(x−2)−3thusg(x)=1(x−2)+(−3)
Hence, g(x)=1(x−2)+(−3) .
(c)
To Find: The model for each transformation of the graph f(x)=x .
(c)

Answer to Problem 5CA
g(x)=2(x−0)+2
Explanation of Solution
Given: The graph is vertical stretch by a factor of 2 units followed by the translation 2 units up.
g(x)=....(x−....)+.... .
Vertical stretch by two means mean multiply the function by two and translation of 2 units up means adding 2 units to the function.
g(x)=2f(x)g(x)=2xg(x)=2x+2thusg(x)=2(x−0)+2
Hence, g(x)=2(x−0)+2 .
(d)
To Find: The model for each transformation of the graph f(x)=x .
(d)

Answer to Problem 5CA
g(x)=12(x−3)+(−4)
Explanation of Solution
Given: The graph is translation 3 units right and vertical shrink by a factor of 12 followed by the translation 4 units down.
g(x)=....(x−....)+.... .
g(x)=f(x−3)g(x)=x−3g(x)=12(x−3)−4thusg(x)=12(x−3)+(−4)
Hence, g(x)=12(x−3)+(−4) .
Chapter 4 Solutions
BIG IDEAS MATH Algebra 2: Common Core Student Edition 2015
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