Every point on the number line corresponds to a …….. number which may be either … or……..

Every point on the number line corresponds to a real number which may be either positive or negative.

Explanation: The number line is a graphical representation of real numbers. It is an infinite line where each point corresponds to a unique real number. The numbers on the right side of 0 are positive, while the numbers on the left side of 0 are negative. The point at 0 represents the integer zero. Every point on the number line represents a specific value, which can be either positive or negative, depending on its position relative to zero.