Question
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Determine which of the following points are included in the solution set to the following linear inequality. \[ \begin{array}{l}-4 x+5 y \geq-3\end{array} \] Answer \( \square(0,0) \) \( \square(7,2) \) \( \square(-2,-3) \) \( \square(-2,2) \) \( \square\left(3, \frac{9}{5}\right) \)

Ask by Barker Daniels. in the United States
Jan 22,2025

Real Tutor Solution

Tutor-Verified Answer

Answer

The points that satisfy the inequality \(-4x + 5y \geq -3\) are: - (0, 0) - (-2, 2) - \(\left(3, \frac{9}{5}\right)\) So, the correct choices are A, C, and E.

Solution

To determine which points satisfy the inequality \(-4x + 5y \geq -3\), we'll evaluate each point by substituting \(x\) and \(y\) into the inequality. 1. **Point (0, 0):** \[ -4(0) + 5(0) = 0 \geq -3 \quad \text{✓} \] 2. **Point (7, 2):** \[ -4(7) + 5(2) = -28 + 10 = -18 \geq -3 \quad \text{✗} \] 3. **Point (-2, -3):** \[ -4(-2) + 5(-3) = 8 - 15 = -7 \geq -3 \quad \text{✗} \] 4. **Point (-2, 2):** \[ -4(-2) + 5(2) = 8 + 10 = 18 \geq -3 \quad \text{✓} \] 5. **Point \(\left(3, \frac{9}{5}\right)\):** \[ -4(3) + 5\left(\frac{9}{5}\right) = -12 + 9 = -3 \geq -3 \quad \text{✓} \] **Conclusion:** The points that satisfy the inequality \(-4x + 5y \geq -3\) are: - \((0, 0)\) - \((-2, 2)\) - \(\left(3, \frac{9}{5}\right)\) **Answer:** All points except (7 , 2) and (–2, –3) are in the solution set.

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Extra Insights

To determine which points satisfy the inequality \(-4x + 5y \geq -3\), we can substitute each point into the inequality and check. 1. For the point \( (0, 0) \): \[ -4(0) + 5(0) \geq -3 \quad \Rightarrow \quad 0 \geq -3 \quad \text{(True)} \] 2. For the point \( (7, 2) \): \[ -4(7) + 5(2) \geq -3 \quad \Rightarrow \quad -28 + 10 \geq -3 \quad \Rightarrow \quad -18 \geq -3 \quad \text{(False)} \] 3. For the point \( (-2, -3) \): \[ -4(-2) + 5(-3) \geq -3 \quad \Rightarrow \quad 8 - 15 \geq -3 \quad \Rightarrow \quad -7 \geq -3 \quad \text{(False)} \] 4. For the point \( (-2, 2) \): \[ -4(-2) + 5(2) \geq -3 \quad \Rightarrow \quad 8 + 10 \geq -3 \quad \Rightarrow \quad 18 \geq -3 \quad \text{(True)} \] 5. For the point \( \left(3, \frac{9}{5}\right) \): \[ -4(3) + 5\left(\frac{9}{5}\right) \geq -3 \quad \Rightarrow \quad -12 + 9 \geq -3 \quad \Rightarrow \quad -3 \geq -3 \quad \text{(True)} \] Thus, the points that are included in the solution set are: - \( (0,0) \) - \( (-2,2) \) - \( \left(3, \frac{9}{5}\right) \) The answers are as follows: \( \checkmark(0,0) \) \( \checkmark(-2,2) \) \( \checkmark\left(3, \frac{9}{5}\right) \) Points \( (7,2) \) and \( (-2,-3) \) are not included in the solution set.

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