Question 1 (1 point)

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Which of the following is a transformation applied to the base function of 72) = 8|8*=3) - 4?
a) A reflection on the x-axis.
b) A horizontal stretch by the factor 6.
c) A horizontal translation 2 units to the right.
d) A vertical translation 2 units down.
Ri
DELL

1 answer

To analyze the function \( f(x) = 8|8x - 3| - 4 \), we'll break down the transformations applied to the base function \( |x| \).

  1. Vertical scaling: The coefficient of \( 8 \) in front of the absolute value indicates a vertical stretch of factor 8.

  2. Horizontal translation: The term \( 8x - 3 \) can be rewritten to identify the horizontal transformation. This can be expressed as: \[ 8(x - \frac{3}{8}) \] This shows that the function is translated \( \frac{3}{8} \) units to the right.

  3. Vertical translation: The \( -4 \) at the end indicates a downward translation of 4 units.

Now looking at the options provided:

  • a) A reflection on the x-axis. (Incorrect) - There is no negative sign in front of the function.
  • b) A horizontal stretch by the factor 6. (Incorrect) - This is not correct.
  • c) A horizontal translation 2 units to the right. (Incorrect) - The translation is \( \frac{3}{8} \), not 2 units.
  • d) A vertical translation 2 units down. (Incorrect) - It translates down 4 units.

None of the options match accurately what we found. Based on the breakdown:

  • Correct analysis: Vertical stretch of 8, horizontal translation \( \frac{3}{8} \) units to the right, and a vertical translation down 4 units.

If I had to pick the closest, option d) conveys a vertical translation, but the distance mentioned is not correct. Therefore, none match correctly.