From concept of number line the mid-point of 4 and -5 is Option(B) 1/2.
A number line is a picture of a graduated straight line that serves as abstraction for real numbers. Every point of a number line is assumed to correspond to a real number, and every real number to a point.
Given that the points are -4 and 5 .
Therefore, the distance between -4 and 5 is 5 - (-4) = 9 .
The mid-point on the number line is 9/2 = 4.5 .
Thus the mid-point of -4 and 5 is =
⇒ -4 + 4.5 = 0.5 or 5 - 4.5 = 0.5 .
The mid-point of -4 and 5 is 0.5
Therefore, from concept of number line the mid-point of 4 and -5 is Option(B) 1/2.
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