Math Problem Statement

Answer this

Which point is a solution to y ≥ 2x - 1?

Solution

Let's solve this inequality:

Given inequality:

y2x1y \geq 2x - 1

We need to check which of the given points satisfies this inequality.

Option A: (4,2)(4, 2)

Substitute x=4x = 4 and y=2y = 2 into the inequality: 22(4)12 \geq 2(4) - 1 2812 \geq 8 - 1 27(false)2 \geq 7 \quad \text{(false)} So, option A is not a solution.

Option B: (4,1)(4, 1)

Substitute x=4x = 4 and y=1y = 1: 12(4)11 \geq 2(4) - 1 1811 \geq 8 - 1 17(false)1 \geq 7 \quad \text{(false)} So, option B is not a solution.

Option C: (0,10)(0, -10)

Substitute x=0x = 0 and y=10y = -10: 102(0)1-10 \geq 2(0) - 1 101(false)-10 \geq -1 \quad \text{(false)} So, option C is not a solution.

Option D: (0,2)(0, 2)

Substitute x=0x = 0 and y=2y = 2: 22(0)12 \geq 2(0) - 1 21(true)2 \geq -1 \quad \text{(true)} So, option D is a solution.

Final Answer:

The correct solution is D. (0, 2).

Would you like further details on solving inequalities or have any other questions?

Here are 5 related questions to explore:

  1. How do you graph the inequality y2x1y \geq 2x - 1?
  2. How do you determine if a point lies on the boundary line of an inequality?
  3. What is the difference between y2x1y \geq 2x - 1 and y>2x1y > 2x - 1?
  4. How do inequalities change when multiplying by a negative number?
  5. How can we test points to check if they satisfy a system of inequalities?

Tip: Always test points by substituting them directly into the inequality to check if they satisfy the condition!

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Math Problem Analysis

Mathematical Concepts

Linear Inequalities
Algebra

Formulas

y ≥ 2x - 1

Theorems

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Suitable Grade Level

Grades 7-9