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Consider the graph of the function \( f(x) = \left( \frac{1}{4} \right)^x \). Which statements describe key...

Select all the correct answers.
Consider the graph of the function \( f(x) = \left( \frac{1}{4} \right)^x \).
Which statements describe key features of function \( f \)?
☐ range of \( \{ y | 0 < y < \infty \} \)
☐ x-intercept at \( (3, 0) \)
☐ horizontal asymptote of \( y = 2 \)
☐ horizontal asymptote of \( y = 0 \)
☐ y-intercept at \( (0, 1) \)
☐ domain of \( \{ x | -1 < x < \infty \} \)

Answer

  1. Range of \( \{ y | 0 < y < \infty \} \): Correct. The range of the function \( f(x) = \left( \frac{1}{4} \right)^x \) is all positive real numbers.
  2. x-intercept at \( (3, 0) \): Incorrect. The function \( f(x) = \left( \frac{1}{4} \right)^x \) does not have an x-intercept because it never crosses the x-axis.
  3. Horizontal asymptote of \( y = 2 \): Incorrect. The horizontal asymptote is \( y = 0 \), not \( y = 2 \).
  4. Horizontal asymptote of \( y = 0 \): Correct. The function approaches \( y = 0 \) as \( x \to \infty \).
  5. y-intercept at \( (0, 1) \): Correct. When \( x = 0 \), \( f(x) = 1 \).
  6. Domain of \( \{ x | -1 < x < \infty \} \): Incorrect. The domain of the function is all real numbers \( \{ x | -\infty < x < \infty \} \).

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