Question
Which point would be a solution to the system of linear inequalities
shown below?
\[ y
Ask by Franklin Lane. in the United States
Feb 25,2025
Ask by Franklin Lane. in the United States
Feb 25,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
Neither \((-10, -2)\) nor \((10, 7)\) satisfies both inequalities.
Solution
To determine which point is a solution to the system of linear inequalities given by:
1. \( y < x - 7 \)
2. \( y < \frac{1}{5} x - 2 \)
we will evaluate the two points provided: \((-10, -2)\) and \((10, 7)\).
### Step 1: Evaluate the point \((-10, -2)\)
1. **For the first inequality \( y < x - 7 \)**:
- Substitute \( x = -10 \) and \( y = -2 \):
\[
-2 < -10 - 7 \implies -2 < -17 \quad \text{(False)}
\]
2. **For the second inequality \( y < \frac{1}{5} x - 2 \)**:
- Substitute \( x = -10 \) and \( y = -2 \):
\[
-2 < \frac{1}{5}(-10) - 2 \implies -2 < -2 - 2 \implies -2 < -4 \quad \text{(False)}
\]
### Conclusion for \((-10, -2)\):
Both inequalities are false, so \((-10, -2)\) is **not** a solution.
### Step 2: Evaluate the point \((10, 7)\)
1. **For the first inequality \( y < x - 7 \)**:
- Substitute \( x = 10 \) and \( y = 7 \):
\[
7 < 10 - 7 \implies 7 < 3 \quad \text{(False)}
\]
2. **For the second inequality \( y < \frac{1}{5} x - 2 \)**:
- Substitute \( x = 10 \) and \( y = 7 \):
\[
7 < \frac{1}{5}(10) - 2 \implies 7 < 2 - 2 \implies 7 < 0 \quad \text{(False)}
\]
### Conclusion for \((10, 7)\):
Both inequalities are false, so \((10, 7)\) is **not** a solution.
### Final Conclusion:
Neither point \((-10, -2)\) nor \((10, 7)\) is a solution to the system of linear inequalities.
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Bonus Knowledge
To solve the inequalities, we can evaluate the given points. For the first inequality \( y < x - 7 \), if we plug in point (-10, -2), we see that -2 < -10 - 7, which simplifies to -2 < -17, a false statement. For point (10, 7), we have 7 < 10 - 7, which simplifies to 7 < 3, also false. Now check the second inequality \( y < \frac{1}{5} x - 2 \). For (-10, -2), we get -2 < -2, which is false, but for (10, 7), we have 7 < \frac{1}{5} \times 10 - 2, or 7 < 0, again false. Thus, neither point satisfies both inequalities! Try testing some other points!