Brook measured the distance LM nd Vivian measured MN on number line.
What is number line?
It is a picture of a straight line that serves as abstraction for real numbers.
How to do measurement on number line?
As we are able to see on the number line and it is told in the question that brook measured 4 units and Vivian measured 6 units LM is equal to 4 units from -6 to -2. Brook measured 6 units from -2 to 4 which is MN.
Hence Brook measured LM and Vivian measured MN.
Learn more about number line at https://brainly.com/question/24644930
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