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If you horizontally shift the square root parent function, [tex]F(x)=\sqrt{x}[/tex], right eight units, what is the equation of the new function?

A. [tex]G(x)=\sqrt{x-8}[/tex]
B. [tex]G(x)=\sqrt{x+8}[/tex]
C. [tex]G(x)=\sqrt{x}-8[/tex]
D. [tex]G(x)=\sqrt{x}+8[/tex]


Sagot :

To determine the new function when the square root parent function [tex]\( F(x) = \sqrt{x} \)[/tex] is shifted to the right by eight units, we need to understand how horizontal shifts affect a function.

For a general function [tex]\( f(x) \)[/tex], a horizontal shift to the right by [tex]\( h \)[/tex] units is represented by [tex]\( f(x - h) \)[/tex]. In this case, [tex]\( h \)[/tex] is positive because we are shifting to the right.

Given that [tex]\( F(x) = \sqrt{x} \)[/tex], if we shift this function to the right by 8 units, we replace [tex]\( x \)[/tex] with [tex]\( x - 8 \)[/tex] in the function. Thus, the new function [tex]\( G(x) \)[/tex] becomes:

[tex]\[ G(x) = \sqrt{x - 8} \][/tex]

Now, let's compare this with the options provided:

A. [tex]\( G(x) = \sqrt{x - 8} \)[/tex]
B. [tex]\( G(x) = \sqrt{x + 8} \)[/tex]
C. [tex]\( G(x) = \sqrt{x} - 8 \)[/tex]
D. [tex]\( G(x) = \sqrt{x} + 8 \)[/tex]

The correct equation for the new function after shifting [tex]\( \sqrt{x} \)[/tex] eight units to the right is:

A. [tex]\( G(x) = \sqrt{x - 8} \)[/tex]

Therefore, the answer is [tex]\(\boxed{A}\)[/tex].