Topic Details (Notes format)

How to Graph Inequalities on the Number Line

Subject: Mathematics

Book: Maths Mastery

For one-variable inequalities like x>2, you shade all real values greater than 2 on a number line, using an open circle at 2 to indicate x cannot equal 2. If it were x≥2, you’d fill the circle at 2. This visual clarifies the solution set’s extent. Number-line graphing is fundamental for single-variable constraint representation, bridging arithmetic with geometry. In daily tasks like weight or budget limits, or advanced system constraints, understanding these representations ensures a quick, intuitive grasp of allowable solution ranges.

Practice Questions

If a:b = 5:7 and b:c = 6:11, what is a:c?

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The sum of the reciprocals of two numbers is 1/4. If one number is 12, what is the other?

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If a rectangle has a length of 10 cm and a width of 6 cm, what is its perimeter?

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What is the sum of all even numbers between 1 and 100?

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What is the square root of 144?

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A cube has a side length of 4 cm. What is its volume?

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What is the cube root of 729?

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The sum of the squares of two consecutive integers is 145. What are the integers?

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If a = 5 and b = 12, what is the length of the hypotenuse of a right triangle?

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If the sum of three consecutive integers is 96, what are the integers?

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