Which point is a solution to this system of inequalities?

[tex]\[
\begin{array}{l}
y \leq \frac{1}{2} x - 3 \\
y + 2x \ \textgreater \ 6
\end{array}
\][/tex]

A. [tex]\((7, -8)\)[/tex]

B. [tex]\((2, -3)\)[/tex]

C. [tex]\((5, -2)\)[/tex]

D. [tex]\((4, 1)\)[/tex]



Answer :

To determine which point is a solution to the system of inequalities, we will evaluate each of the given points against the two inequalities:
1. [tex]\( y \leq \frac{1}{2} x - 3 \)[/tex]
2. [tex]\( y + 2x > 6 \)[/tex]

Let's check each point one by one:

### Point A: [tex]\((7, -8)\)[/tex]
1. Test inequality [tex]\( y \leq \frac{1}{2} x - 3 \)[/tex]:
[tex]\[ -8 \leq \frac{1}{2} \cdot 7 - 3 \][/tex]
Simplify the right side:
[tex]\[ -8 \leq \frac{7}{2} - 3 = \frac{7}{2} - \frac{6}{2} = \frac{1}{2} \][/tex]
Since [tex]\(-8 \leq \frac{1}{2}\)[/tex], this inequality is satisfied.

2. Test inequality [tex]\( y + 2x > 6 \)[/tex]:
[tex]\[ -8 + 2 \cdot 7 > 6 \][/tex]
Simplify the left side:
[tex]\[ -8 + 14 > 6 \][/tex]
[tex]\[ 6 > 6 \][/tex]
This inequality is not satisfied since [tex]\(6\)[/tex] is not greater than [tex]\(6\)[/tex].

Therefore, point A [tex]\((7, -8)\)[/tex] is not a solution.

### Point B: [tex]\((2, -3)\)[/tex]
1. Test inequality [tex]\( y \leq \frac{1}{2} x - 3 \)[/tex]:
[tex]\[ -3 \leq \frac{1}{2} \cdot 2 - 3 \][/tex]
Simplify the right side:
[tex]\[ -3 \leq 1 - 3 = -2 \][/tex]
Since [tex]\(-3 \leq -2\)[/tex], this inequality is satisfied.

2. Test inequality [tex]\( y + 2x > 6 \)[/tex]:
[tex]\[ -3 + 2 \cdot 2 > 6 \][/tex]
Simplify the left side:
[tex]\[ -3 + 4 > 6 \][/tex]
[tex]\[ 1 > 6 \][/tex]
This inequality is not satisfied since [tex]\(1\)[/tex] is not greater than [tex]\(6\)[/tex].

Therefore, point B [tex]\((2, -3)\)[/tex] is not a solution.

### Point C: [tex]\((5, -2)\)[/tex]
1. Test inequality [tex]\( y \leq \frac{1}{2} x - 3 \)[/tex]:
[tex]\[ -2 \leq \frac{1}{2} \cdot 5 - 3 \][/tex]
Simplify the right side:
[tex]\[ -2 \leq \frac{5}{2} - 3 = \frac{5}{2} - \frac{6}{2} = -\frac{1}{2} \][/tex]
Since [tex]\(-2 \leq -\frac{1}{2}\)[/tex], this inequality is satisfied.

2. Test inequality [tex]\( y + 2x > 6 \)[/tex]:
[tex]\[ -2 + 2 \cdot 5 > 6 \][/tex]
Simplify the left side:
[tex]\[ -2 + 10 > 6 \][/tex]
[tex]\[ 8 > 6 \][/tex]
This inequality is satisfied.

Therefore, point C [tex]\((5, -2)\)[/tex] is a solution.

### Point D: [tex]\((4, 1)\)[/tex]
1. Test inequality [tex]\( y \leq \frac{1}{2} x - 3 \)[/tex]:
[tex]\[ 1 \leq \frac{1}{2} \cdot 4 - 3 \][/tex]
Simplify the right side:
[tex]\[ 1 \leq 2 - 3 = -1 \][/tex]
Since [tex]\(1 \leq -1\)[/tex] is not true, this inequality is not satisfied.

Therefore, point D [tex]\((4, 1)\)[/tex] is not a solution.

After evaluating all the points, we find that the only point that satisfies both inequalities is:

[tex]\[ \boxed{(5, -2)} \][/tex]