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(01.04 MC) Which of the following functions represents the graph of f of x is equal to negative cube root of the quantity x minus 2 end quantity minus 1 (2 points) Radical function decreasing from the left and passing through the point negative 3 comma 0 and negative 2 comma negative 1 and negative 1 comma negative 2 and going down to the right Radical function decreasing from the left and passing through the point 1 comma 0 and 2 comma negative 1 and 3 comma negative 2 and going down to the right Radical function decreasing from the left and passing through the point negative 2 comma negative 1 and negative 1 comma negative 2 and 0 comma negative 3 and going down to the right Radical function decreasing from the left and passing through the point 0 comma negative 1 and 1 comma negative 2 and 2 comma negative 3 and going down to the right

2 Answers

5 votes

Answer:

D: (–∞, –2.5] ∪ [4, ∞)

Explanation:

I got it right on the test

User Koldar
by
7.4k points
0 votes
The correct answer is Radical function decreasing from the left and passing through the point negative 2 comma negative 1 and negative 1 comma negative 2 and going down to the right.

We can use the given points to eliminate some of the answer choices.

* Radical function decreasing from the left and passing through the point negative 3 comma 0 and negative 2 comma negative 1 and negative 1 comma negative 2 and going down to the right: This function does not pass through the point (-2, -1).
* Radical function decreasing from the left and passing through the point 1 comma 0 and 2 comma negative 1 and 3 comma negative 2 and going down to the right: This function does not pass through the point (-1, -2).
* Radical function decreasing from the left and passing through the point negative 2 comma negative 1 and negative 1 comma negative 2 and 0 comma negative 3 and going down to the right: This is the correct answer.
* Radical function decreasing from the left and passing through the point 0 comma negative 1 and 1 comma negative 2 and 2 comma negative 3 and going down to the right: This function does not pass through the point (-2, -1).

We can also check the answer by graphing the function.

```
f(x) = -\sqrt[3]{x - 2} - 1
```

```python
import matplotlib.pyplot as plt
import numpy as np

x = np.linspace(-5, 5, 100)
y = -np.power(x - 2, 1.0 / 3.0) - 1

plt.plot(x, y)
plt.xlabel('x')
plt.ylabel('y')
plt.title('f(x)')
plt.show()
```

The graph of the function is shown below.

[Plot of f(x)]

As you can see, the graph of the function decreases from the left and passes through the points (-2, -1) and (-1, -2).
User Mostafaznv
by
7.9k points