根据两点写线性方程（y轴截距为整数）

GeoGebra 命令及参数

1. Sequence(i, i, -10, 10, 1) → ylist, {-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
2. Sequence(i, i, -4, -1, 1) → Xleftfinal, {-4, -3, -2, -1}
3. Sequence(i, i, 1, 4, 1) → Xrightfinal, {1, 2, 3, 4}
4. Union(Xleftfinal, Xrightfinal) → Xlistfinal
5. Sequence(i, i, -10, 10, 1) → xlist, {-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
6. RandomElement(Xlistfinal) → a
7. Sequence(i, i, a + 1, 10, 1) → xlist2, {-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
8. Sequence(i, i, -10, a - 1, 1) → xlist1, {-10, -9, -8, -7, -6, -5, -4, -3}
9. Union(xlist1, xlist2) → list1
10. RandomElement(list1) → c
11. RandomElement(ylist) → b
12. RandomElement(ylist) → d
13. FractionText(e) → text1
14. FractionText(g(0)) → text8
15. Random(-20, 20) → h
16. RandomElement(scalarlist1) → j
17. Line(A, B) → m
18. RandomElement(list2) → sc
19. FractionText(Slope[m]) → text10
20. Union(xlist1, xlist2) → list3
21. Textfield(f) → InputBox1