Math Problem Statement

Which statement is true about the points shown on the number line below?

Solution

The number line shown has points LL, MM, NN, and PP marked at specific positions, where:

  • LL is positioned at 1-1,
  • MM is at 00,
  • NN is slightly positive (between 0 and 1),
  • PP is close to 1.

Let's analyze each statement:

  1. Statement A: MN>0M \cdot N > 0
    Since M=0M = 0, multiplying by any number (positive or negative) will yield 00, not a value greater than 00. So this statement is false.

  2. Statement B: LN<ML \cdot N < M
    Here, L=1L = -1 and M=0M = 0. When we multiply LL (which is negative) by NN (positive), the result is negative, which indeed is less than MM (which is 00). Thus, this statement is true.

  3. Statement C: MN>PM - N > P
    Since M=0M = 0 and NN is a small positive number, MNM - N would be negative, which cannot be greater than PP, a positive number close to 1. So, this statement is false.

  4. Statement D: L+P>NL + P > N
    L=1L = -1 and PP is nearly 1, so L+PL + P is approximately 00, which is not greater than NN (a positive value between 00 and 11). This statement is false.

Therefore, the correct answer is B: LN<ML \cdot N < M,** which is the selected answer.

Would you like further explanation on any of these statements?

Here are 5 questions for further exploration:

  1. How does multiplication of positive and negative numbers affect the sign of a product?
  2. Why does multiplying any number by zero result in zero?
  3. How can inequalities help us understand the relationship between numbers on a number line?
  4. What is the significance of the position of points on a number line in evaluating inequalities?
  5. How do we compare sums and differences of numbers with different signs?

Tip: When analyzing inequalities, break down each term's behavior separately before comparing the entire expression.

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Math Problem Analysis

Mathematical Concepts

Inequalities
Number Line
Multiplication and Addition of Integers

Formulas

Inequalities
Multiplication and Addition of Positive and Negative Integers

Theorems

Properties of Inequalities
Properties of Integers on a Number Line

Suitable Grade Level

Grades 6-8