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Which point is a solution to [tex]y \leq 3x - 4[/tex]?

A. [tex](-2, 0)[/tex]
B. [tex](3, 1)[/tex]
C. [tex](0, 0)[/tex]
D. [tex](0, 4)[/tex]


Sagot :

To find out which point is a solution to the inequality [tex]\( y \leq 3x - 4 \)[/tex], we will evaluate the inequality at each of the given points.

Let's check each point step by step:

1. For the point [tex]\((-2,0)\)[/tex]:
- Substitute [tex]\( x = -2 \)[/tex] and [tex]\( y = 0 \)[/tex] into the inequality [tex]\( y \leq 3x - 4 \)[/tex]:
[tex]\[ 0 \leq 3(-2) - 4 \][/tex]
[tex]\[ 0 \leq -6 - 4 \][/tex]
[tex]\[ 0 \leq -10 \][/tex]
This is not true, so [tex]\((-2,0)\)[/tex] is not a solution.

2. For the point [tex]\((3,1)\)[/tex]:
- Substitute [tex]\( x = 3 \)[/tex] and [tex]\( y = 1 \)[/tex] into the inequality [tex]\( y \leq 3x - 4 \)[/tex]:
[tex]\[ 1 \leq 3(3) - 4 \][/tex]
[tex]\[ 1 \leq 9 - 4 \][/tex]
[tex]\[ 1 \leq 5 \][/tex]
This is true, so [tex]\((3,1)\)[/tex] is a solution.

3. For the point [tex]\((0,0)\)[/tex]:
- Substitute [tex]\( x = 0 \)[/tex] and [tex]\( y = 0 \)[/tex] into the inequality [tex]\( y \leq 3x - 4 \)[/tex]:
[tex]\[ 0 \leq 3(0) - 4 \][/tex]
[tex]\[ 0 \leq 0 - 4 \][/tex]
[tex]\[ 0 \leq -4 \][/tex]
This is not true, so [tex]\((0,0)\)[/tex] is not a solution.

4. For the point [tex]\((0,4)\)[/tex]:
- Substitute [tex]\( x = 0 \)[/tex] and [tex]\( y = 4 \)[/tex] into the inequality [tex]\( y \leq 3x - 4 \)[/tex]:
[tex]\[ 4 \leq 3(0) - 4 \][/tex]
[tex]\[ 4 \leq 0 - 4 \][/tex]
[tex]\[ 4 \leq -4 \][/tex]
This is not true, so [tex]\((0,4)\)[/tex] is not a solution.

Therefore, among the provided options, the only point that satisfies the inequality [tex]\( y \leq 3x - 4 \)[/tex] is [tex]\((3,1)\)[/tex]. Thus, the correct answer is:

B. [tex]\((3,1)\)[/tex]