Question

Which number line would not describe a situation where the midpoint between points A and B is 2 1/2?

Answer 1

Option C

Explanation:

We know that in a number line numbers all (rational preferably) would be marked on a line in a chronological order.

Mid point of A and B would be the average value of A and B.

Here given that mid point is 2 1/2

This implies average of A and B is 2 1/2

Or total of A and B should be 5

Out of 4 options let us check which gives total 5.

A) (2,3) .. Total is 5

B) (-4,9)..Total is again 5

C) (-4,8)..Total is not 5 but 4

D) (-0.75, 5,75) .. Total is 5

So out of these 4 options only C would not describe a situation where the midpoint between points A and B is 2 1/2

Answer 2

Answer: (-4, 8)

Options (A, B):
1. (2, 3)
2. (-4, 9)
3. (-4, 8)
4. (-0.75, 5.75)