Question
Write the domain and range for the square root function \( y=\sqrt{3 x-2}+4 \) in interval notation. (1 point) domain: \( \left[\frac{2}{3}, \infty\right) \), range: \( [4, \infty) \) domain: \( [4, \infty) \), range: \( \left[\frac{2}{3}, \infty\right) \) domain: \( (4, \infty) \), range: \( \left(\frac{2}{3}, \infty\right) \) domain: \( \left(\frac{2}{3}, \infty\right) \), range: \( (4, \infty) \)
Ask by Coles Gordon. in the United States
Jan 21,2025
Real Tutor Solution
Tutor-Verified Answer
Answer
The domain is \( \left[\frac{2}{3}, \infty\right) \) and the range is \( [4, \infty) \).
Solution
The correct domain and range for the function \( y = \sqrt{3x - 2} + 4 \) are:
- **Domain:** \( \left[\frac{2}{3}, \infty\right) \)
- **Range:** \( [4, \infty) \)
**Correct Option:**
- **domain:** \( \left[\frac{2}{3}, \infty\right) \), **range:** \( [4, \infty) \)
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Bonus Knowledge
To find the domain of \( y = \sqrt{3x - 2} + 4 \), we need to ensure that the expression inside the square root is non-negative. This leads to the inequality \( 3x - 2 \geq 0 \), which solves to \( x \geq \frac{2}{3} \). Therefore, the domain is \( \left[\frac{2}{3}, \infty\right) \). The range can be determined by considering the behavior of the square root function. The minimum value occurs when \( x = \frac{2}{3} \), giving \( y = \sqrt{0} + 4 = 4 \). As \( x \) increases, \( y \) will also increase without bound. Thus, the range is \( [4, \infty) \).