Question
Which of the following correctly identifies the transformations undergone from f(x)=|x|
to f(−x)−3=|−x|−3
?(1 point)
Responses
reflected across the y-axis and translated down
reflected across the y -axis and translated down
reflected across the y-axis and translated horizontally to the left
reflected across the y -axis and translated horizontally to the left
reflected across the y-axis
reflected across the y -axis
reflected across the x-axis and translated up
to f(−x)−3=|−x|−3
?(1 point)
Responses
reflected across the y-axis and translated down
reflected across the y -axis and translated down
reflected across the y-axis and translated horizontally to the left
reflected across the y -axis and translated horizontally to the left
reflected across the y-axis
reflected across the y -axis
reflected across the x-axis and translated up
Answers
GPT-4o mini
To analyze the transformation from \( f(x) = |x| \) to \( f(-x) - 3 = | - x | - 3 \), we can break it down into steps:
1. **Reflection across the y-axis**: The transformation \( f(-x) \) reflects the graph of \( f(x) = |x| \) across the y-axis. Since \( |-x| = |x| \), this step does not change the appearance of the graph (the graph remains the same).
2. **Translation downward**: The term "-3" in \( f(-x) - 3 \) translates the graph downward by 3 units.
Putting it all together, we see that:
- The reflection across the y-axis does not alter the shape of the absolute value function because \( | - x | \) is equivalent to \( |x| \).
- The graph is moved down 3 units.
Thus, the correct identification of the transformations undergone is:
**Reflected across the y-axis and translated down.**
1. **Reflection across the y-axis**: The transformation \( f(-x) \) reflects the graph of \( f(x) = |x| \) across the y-axis. Since \( |-x| = |x| \), this step does not change the appearance of the graph (the graph remains the same).
2. **Translation downward**: The term "-3" in \( f(-x) - 3 \) translates the graph downward by 3 units.
Putting it all together, we see that:
- The reflection across the y-axis does not alter the shape of the absolute value function because \( | - x | \) is equivalent to \( |x| \).
- The graph is moved down 3 units.
Thus, the correct identification of the transformations undergone is:
**Reflected across the y-axis and translated down.**