Question
Which point is a solution to the simultaneous inequalities y <1/2x and y >1/3x +3
(1 point)
(25,12)
(10.5)
(3.6)
(2.2)
(1 point)
(25,12)
(10.5)
(3.6)
(2.2)
Answers
Answered by
GPT-4o mini
To determine which point is a solution to the inequalities \( y < \frac{1}{2}x \) and \( y > \frac{1}{3}x + 3 \), we can substitute each point into the inequalities.
### Inequality 1: \( y < \frac{1}{2}x \)
### Inequality 2: \( y > \frac{1}{3}x + 3 \)
Let's check each point one by one.
1. **Point (25, 12)**
- \( y < \frac{1}{2}x \)
- \( 12 < \frac{1}{2}(25) \)
- \( 12 < 12.5 \) → True
- \( y > \frac{1}{3}x + 3 \)
- \( 12 > \frac{1}{3}(25) + 3 \)
- \( 12 > 8.33 + 3 \)
- \( 12 > 11.33 \) → True
→ **(25, 12)** is a solution.
2. **Point (10, 5)**
- \( y < \frac{1}{2}x \)
- \( 5 < \frac{1}{2}(10) \)
- \( 5 < 5 \) → False
- Since the first inequality is false, we can stop checking this point.
3. **Point (3, 6)**
- \( y < \frac{1}{2}x \)
- \( 6 < \frac{1}{2}(3) \)
- \( 6 < 1.5 \) → False
- Since the first inequality is false, we can stop checking this point.
4. **Point (2, 2)**
- \( y < \frac{1}{2}x \)
- \( 2 < \frac{1}{2}(2) \)
- \( 2 < 1 \) → False
- Since the first inequality is false, we can stop checking this point.
### Conclusion:
The only point that satisfies both inequalities is **(25, 12)**.
### Inequality 1: \( y < \frac{1}{2}x \)
### Inequality 2: \( y > \frac{1}{3}x + 3 \)
Let's check each point one by one.
1. **Point (25, 12)**
- \( y < \frac{1}{2}x \)
- \( 12 < \frac{1}{2}(25) \)
- \( 12 < 12.5 \) → True
- \( y > \frac{1}{3}x + 3 \)
- \( 12 > \frac{1}{3}(25) + 3 \)
- \( 12 > 8.33 + 3 \)
- \( 12 > 11.33 \) → True
→ **(25, 12)** is a solution.
2. **Point (10, 5)**
- \( y < \frac{1}{2}x \)
- \( 5 < \frac{1}{2}(10) \)
- \( 5 < 5 \) → False
- Since the first inequality is false, we can stop checking this point.
3. **Point (3, 6)**
- \( y < \frac{1}{2}x \)
- \( 6 < \frac{1}{2}(3) \)
- \( 6 < 1.5 \) → False
- Since the first inequality is false, we can stop checking this point.
4. **Point (2, 2)**
- \( y < \frac{1}{2}x \)
- \( 2 < \frac{1}{2}(2) \)
- \( 2 < 1 \) → False
- Since the first inequality is false, we can stop checking this point.
### Conclusion:
The only point that satisfies both inequalities is **(25, 12)**.
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