Points \(A=-3\) and \(B=2\) lie on the number line. What is the distance from point \(A\) to point \(B\)?
Answer and explanation
Correct answer: 5
The distance between two points is \(|B-A|=|2-(-3)|=|5|=5\) units. Therefore, 5 is correct. The distractor 3 may result from incorrectly ignoring the negative sign, whereas subtracting a negative number gives \(2-(-3)=5\). Exam tip: Use \(|x_2-x_1|\) to find distance on a number line because distance is never negative.
Frequently asked questions
What is the correct answer to this question?
5
Why is this the correct answer?
The distance between two points is \(|B-A|=|2-(-3)|=|5|=5\) units. Therefore, 5 is correct. The distractor 3 may result from incorrectly ignoring the negative sign, whereas subtracting a negative number gives \(2-(-3)=5\). Exam tip: Use \(|x_2-x_1|\) to find distance on a number line because distance is never negative.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Polynomials. Topic: Representing real numbers on the number line.
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