Topic content:
The number represented by the corresponding point obtained by moving the point corresponding to number 2 3 units on the number axis is ()
A.5
B.-1
C. 5 or - 1
D. Uncertain
Best answer:
If the point corresponding to the number 2 is moved 3 units to the right, the number represented by the corresponding point is 2+3=5;
If you move 3 units to the left, the corresponding point represents 2-3=- 1
Therefore, C
Answer analysis:
There is no explanation for this question
Test core:
Definition of number axis: a straight line specifying the unique origin, positive direction and unit length is called number axis. The number axis has three elements: origin, positive direction and unit length, which are indispensable. The number axis is a straight line that can extend infinitely to both sides, so all rational numbers can be represented by points on the number axis.