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Which of the following ordered pairs is a solution to the inequality:

[tex]\[ y \ \textless \ 3x - 7 \][/tex]

A. [tex]\((0, -7)\)[/tex]

B. [tex]\((4, 2)\)[/tex]

C. [tex]\((0, 0)\)[/tex]

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


Sagot :

To determine which ordered pairs satisfy the inequality [tex]\( y < 3x - 7 \)[/tex], we need to test each pair individually. Let's go through each ordered pair step by step:

1. Ordered Pair (0, -7):
[tex]\[ y = -7 \quad \text{and} \quad x = 0 \][/tex]
Substitute [tex]\(x\)[/tex] and [tex]\(y\)[/tex] into the inequality:
[tex]\[ -7 < 3(0) - 7 \][/tex]
Simplify the right-hand side:
[tex]\[ -7 < -7 \][/tex]
This inequality is not true because [tex]\(-7\)[/tex] is not less than [tex]\(-7\)[/tex], hence [tex]\((0, -7)\)[/tex] is not a solution.

2. Ordered Pair (4, 2):
[tex]\[ y = 2 \quad \text{and} \quad x = 4 \][/tex]
Substitute [tex]\(x\)[/tex] and [tex]\(y\)[/tex] into the inequality:
[tex]\[ 2 < 3(4) - 7 \][/tex]
Simplify the right-hand side:
[tex]\[ 2 < 12 - 7 \][/tex]
[tex]\[ 2 < 5 \][/tex]
This inequality is true because [tex]\(2\)[/tex] is less than [tex]\(5\)[/tex], hence [tex]\((4, 2)\)[/tex] is a solution.

3. Ordered Pair (0, 0):
[tex]\[ y = 0 \quad \text{and} \quad x = 0 \][/tex]
Substitute [tex]\(x\)[/tex] and [tex]\(y\)[/tex] into the inequality:
[tex]\[ 0 < 3(0) - 7 \][/tex]
Simplify the right-hand side:
[tex]\[ 0 < -7 \][/tex]
This inequality is not true because [tex]\(0\)[/tex] is not less than [tex]\(-7\)[/tex], hence [tex]\((0, 0)\)[/tex] is not a solution.

4. Ordered Pair (-3, 2):
[tex]\[ y = 2 \quad \text{and} \quad x = -3 \][/tex]
Substitute [tex]\(x\)[/tex] and [tex]\(y\)[/tex] into the inequality:
[tex]\[ 2 < 3(-3) - 7 \][/tex]
Simplify the right-hand side:
[tex]\[ 2 < -9 - 7 \][/tex]
[tex]\[ 2 < -16 \][/tex]
This inequality is not true because [tex]\(2\)[/tex] is not less than [tex]\(-16\)[/tex], hence [tex]\((-3, 2)\)[/tex] is not a solution.

After evaluating all the ordered pairs, the one that satisfies the inequality [tex]\( y < 3x - 7 \)[/tex] is:
[tex]\[ (4, 2) \][/tex]