What is the correct description for the transformation from b(x)=3−12x−−−−−√

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=
3

12
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to m(x)=34x−−√
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=
3
4
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?(1 point)
Responses

horizontal compression by a factor of 13
1
3
and a reflection over the x-axis
horizontal compression by a factor of Start Fraction 1 over 3 End Fraction and a reflection over the x -axis

horizontal compression by a factor of 13
1
3
and a reflection over the y-axis
horizontal compression by a factor of Start Fraction 1 over 3 End Fraction and a reflection over the y -axis

horizontal stretch by a factor of 3 and a reflection over the x-axis
horizontal stretch by a factor of 3 and a reflection over the x -axis

horizontal stretch by a factor of 3 and a reflection over the y-axis

1 answer

To analyze the transformation from \( b(x) = 3 - \sqrt{12x} \) to \( m(x) = \frac{3}{4} \sqrt{x} \), we need to break down the transformation step by step.

  1. Understand the original function: The function \( b(x) = 3 - \sqrt{12x} \) consists of a square root function multiplied by \( \sqrt{12} \), where \( 12 \) indicates a horizontal compression because the argument of the square root is multiplied by a factor of 12.

  2. Identify the basic transformation: The term \( \sqrt{12x} \) can be rewritten as \( \sqrt{12} \sqrt{x} \), which illustrates that \( \sqrt{x} \) is being compressed horizontally because multiplying \( x \) by 12 compresses the graph towards the y-axis.

  3. Transformation of the \( y \)-value: The transformation includes changing the vertical shift from 3 into a different function. The reflection over the x-axis occurs here because of the negative sign in front of \( \sqrt{12x} \) in the original function.

  4. Final steps towards the transformation: The transformation leads you to \( m(x) = \frac{3}{4} \sqrt{x} \). Upon comparing, you can observe that there is indeed a vertical compression too, as the output is multiplied by \( \frac{3}{4} \).

  5. Conclusion: The correct description for the transformation involves a horizontal compression by a factor of \( \frac{1}{3} \) and a reflection over the x-axis.

The correct response matches: Horizontal compression by a factor of \( \frac{1}{3} \) and a reflection over the x-axis.