写线性方程（二）- B不明显

GeoGebra 命令及参数

1. Sequence(i, i, -10, 10, 1) → a_1
2. RandomElement(a_1) → a
3. Sequence(i, i, -10, a - 1, 1) → aleft
4. Sequence(i, i, a + 1, 10, 1) → aright
5. Union(aleft, aright) → aleftplusright
6. Random(-8, 8) → b_1
7. Line(A, B) → b
8. Textfield(mguess) → InputBox1
9. Textfield(bguess) → InputBox2
10. Intersect(e, f) → C
11. Polygon(B, A, C) → poly1, c_1, b_2, a_2
12. Segment(B, C) → g
13. Segment(C, A) → h
14. FractionText(mguess) → text3
15. FractionText(bguess) → text4
16. FractionText(b(0)) → text7
17. Line(A, B) → j