High School

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If [tex]f(x) = x^3[/tex] and [tex]g(x) = (x+4)^3[/tex], which description represents the graph of function [tex]g[/tex]?

A. A horizontal transformation of function [tex]f[/tex] 4 units left
B. A horizontal transformation of function [tex]f[/tex] 44 units right
C. A vertical transformation of function [tex]f[/tex] 4 units down
D. A vertical transformation of function [tex]f[/tex] 4 units up

Answer :

To solve this problem, we need to determine how the function [tex]\( g(x) = (x+4)^3 \)[/tex] is derived from the function [tex]\( f(x) = x^3 \)[/tex].

1. Understand the Basic Function:
Our starting function is [tex]\( f(x) = x^3 \)[/tex]. This is a basic cubic function, and its graph passes through the origin (0, 0) and has a characteristic S-shape.

2. Identify the Transformation in [tex]\( g(x) = (x+4)^3 \)[/tex]:
Notice that [tex]\( g(x) \)[/tex] takes the form of [tex]\( f(x) \)[/tex] with [tex]\( x \)[/tex] replaced by [tex]\( (x+4) \)[/tex]. This is a transformed version of the function [tex]\( f(x) \)[/tex].

3. Horizontal Transformation:
The expression [tex]\((x+4)\)[/tex] indicates a horizontal transformation. Typically, [tex]\( f(x+c) \)[/tex] results in a horizontal shift of the graph of the function [tex]\( f(x) \)[/tex] by [tex]\( c \)[/tex] units. In this case, [tex]\( +4 \)[/tex] inside the function suggests a shift to the left by 4 units.

4. Conclusion:
Therefore, the graph of [tex]\( g(x) = (x+4)^3 \)[/tex] compared to [tex]\( f(x) = x^3 \)[/tex] is shifted 4 units to the left.

The correct description for the transformation is:
- A. a horizontal transformation of function [tex]\( f \)[/tex] 4 units left.

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