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Starting from a certain point on the number axis, a point first moves 5 unit lengths to the right, and then moves 2 unit lengths to the left. At this time, the number represented by this point is 1, then what is the number represented by the starting point?
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- 1. 3 move 12 unit lengths to the left and 8 unit lengths to the right on the number axis. How many unit lengths can this number move to the right to return to the origin? Is the origin 0 or 3?
- 2. On the number axis, point a first moves 5 units to the left and then 8 units to the right to reach point B. if the number represented by point B is 2, what number does point a represent
- 3. If a point on the number axis moves 4 unit lengths to the left and then 8 unit lengths to the right along the number axis, and the number represented by the end point is 0, then it originally represents 0 What is the number? If this point takes 6 seconds from the start to the end, what is the average moving speed of this point?
- 4. Starting from a point on the number axis, a point moves 5 unit lengths to the right, and then 4 unit lengths to the left. If the number represented by the end point is - 3, what is the number represented by the start point
- 5. Move point a representing 3 on the number axis by 5 units to get point B, then the number represented by point B is______ ．
- 6. The corresponding point of a rational number on the number axis is a. move point a three unit length to the left and then two unit length to the left to get point B. the absolute value of the number corresponding to point B is equal to that of point A. what is the corresponding number of point a?
- 7. The numbers corresponding to two points a and B on the number axis are - 8 and 2. If M and N start from two points a and B at the same time, they move on the number axis at a certain speed The velocity of m point is 2 units / s, and that of N point is 1 unit / s Point C is between a and B, and point n starts from point B and moves in the negative direction of the number axis. When point n goes to the midpoint D of two points B and C, what is the sum of the distances from point n to two points a and C?
- 8. What are the characteristics of the position of two opposite points on the number axis?
- 9. What are the characteristics of the position of a pair of opposite numbers on the number axis
- 10. What are the characteristics of two points on the number axis that represent two opposite numbers?
- 11. A point starts from a point on the number axis, first moves 4 units to the right, and then moves 6 units to the left. At this time, the point represents + 1, then the number represented by the starting point is
- 12. A point starts from a certain point on the number axis, first moves 4 units to the right, and then moves 3 units to the left. If the number of the midpoint is - 2, what is the number of the starting point
- 13. A point starts from a point on the number axis, moves 5 unit lengths to the right, and then moves 2 units to the left. At this time, the point is + 4. What is the number represented by the starting point? Represented by graph
- 14. Point a is on the number axis. If you move a to the left by 8 length units and then to the right by 2 length units, then point a is the opposite number of the original point a
- 15. On the number axis, what is the number of 6 length units at the point of distance 3?
- 16. On the number axis, the distance between - 3 points and the point of 5 length units is - 3?
- 17. The number represented by point a on the number axis is 8, B is on the left side of a, and ab = 14. Starting from point a, the moving point P moves to the left along the number axis at the speed of 5 unit lengths per second, and the movement time is t (T > 0) seconds, The number represented by point P (expressed in an algebraic formula containing T) 2. The moving point Q starts from point B and advances to the left at a speed of 3 unit lengths per second along the number axis at a uniform speed. If point P and Q start at the same time, how many seconds does point P move to catch up with point q? 3. If M is the midpoint of AP and N is the midpoint of Pb, does the length of line Mn change during the movement of point P? If so, explain the reason personally. If not, please draw a graph, And find out the length of line Mn
- 18. It is known that the point a on the number axis represents 6, B represents - 4, and the moving point P starts from a and moves to the left at a speed of 6 unit lengths per second along the number axis at a uniform speed Given that point a on the number axis represents 6, B represents - 4, the moving point P starts from a and moves along the number axis at the speed of 6 unit lengths per second Move evenly to the left The moving point Q starts from a and moves to the left uniformly along the number axis at the speed of 1 unit length per second; the moving point R starts from B If P, Q and R move at the same time When p catches up with R, it immediately moves back to Q. when it meets Q, it stops moving. Then P moves from the beginning to the end What is the unit length of the journey when the movement stops?
- 19. Xiaoqiang represents two positive numbers 5 and 6 with a point A.B on the number axis. He translates A.B to the left at the same time, with the same unit length The numbers of the two new points are opposite to each other
- 20. -1 translate 3 unit lengths to the right according to the positive direction of the number axis to point B, then the number represented by point B is?