Math Problem Statement

The distance between two numbers on the number line is 9. If one of the numbers is 7, what are the two possibilities for the other number?

Solution

To find the two possible values for the other number, given that the distance between the two numbers is 9 and one of the numbers is 7, you can set up the following equation:

x7=9|x - 7| = 9

This equation represents the absolute difference between the two numbers. We can solve it by considering the two possible cases:

Case 1: Positive Distance

x7=9x - 7 = 9 x=9+7=16x = 9 + 7 = 16

Case 2: Negative Distance

x7=9x - 7 = -9 x=9+7=2x = -9 + 7 = -2

Conclusion:

The two possibilities for the other number are 16 and -2.

Do you have any questions or need further details? Here are some related questions you might find interesting:

  1. How do you calculate the distance between two points on a coordinate plane?
  2. What is the distance between 10 and -4 on the number line?
  3. How can you determine the midpoint between two numbers on a number line?
  4. How does the concept of absolute value relate to distance on the number line?
  5. What is the distance between -7 and 2 on the number line?

Tip: When solving problems involving distance on the number line, remember to consider both the positive and negative cases in the absolute value equation.

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Math Problem Analysis

Mathematical Concepts

Absolute Value
Distance on Number Line

Formulas

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Theorems

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Suitable Grade Level

Grades 6-8