What is reflection of -4 on number line
Answer and explanation
Correct answer: 4
On a number line, the reflection of a number about zero is its additive inverse. Since -4 is 4 units to the left of zero, its reflection is 4 units to the right of zero, i.e. 4. The option -4 represents the original point, not its reflection. Exam tip: the reflection of x about zero is -x.
Frequently asked questions
What is the correct answer to this question?
4
Why is this the correct answer?
On a number line, the reflection of a number about zero is its additive inverse. Since -4 is 4 units to the left of zero, its reflection is 4 units to the right of zero, i.e. 4. The option -4 represents the original point, not its reflection. Exam tip: the reflection of x about zero is -x.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Number line.
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