1. **State the problem:** Determine if the ordered pairs (-1, 0), (-1, 5), and (0, -3) satisfy the system of inequalities:
$$y \leq 3x + 4$$
$$y < -2x - 1$$
2. **Check point (-1, 0):**
- Substitute $x = -1$, $y = 0$ into the first inequality:
$$0 \leq 3(-1) + 4 = -3 + 4 = 1$$
This is true since $0 \leq 1$.
- Substitute into the second inequality:
$$0 < -2(-1) - 1 = 2 - 1 = 1$$
This is true since $0 < 1$.
Therefore, (-1, 0) satisfies both inequalities.
3. **Check point (-1, 5):**
- Substitute $x = -1$, $y = 5$ into the first inequality:
$$5 \leq 3(-1) + 4 = -3 + 4 = 1$$
This is false since $5 \leq 1$ is not true.
Since the first inequality fails, (-1, 5) is not a solution.
4. **Check point (0, -3) algebraically:**
- Substitute $x = 0$, $y = -3$ into the first inequality:
$$-3 \leq 3(0) + 4 = 0 + 4 = 4$$
True since $-3 \leq 4$.
- Substitute into the second inequality:
$$-3 < -2(0) - 1 = 0 - 1 = -1$$
True since $-3 < -1$.
Therefore, (0, -3) satisfies both inequalities and is a solution.
**Final answers:**
- (-1, 0): Yes, it is a solution.
- (-1, 5): No, it is not a solution.
- (0, -3): Yes, it is a solution.
Linear Inequalities Ffe530
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