直线方程填空题（b不明显）

GeoGebra 命令及参数

1. Sequence(i, i, -14, 14) → list1
2. RandomElement(list1) → r
3. Sequence(i, i, -14, r - 1) → list3
4. Sequence(i, i, r + 1, 14) → list4
5. Union(list3, list4) → list5
6. RandomElement(list2) → s
7. Line(A, B) → a
8. Slope(a) → m
9. Textfield(m_1) → slope
10. Textfield(b_1) → y_intercept
11. FractionText(m) → text5
12. FractionText(b) → text6
13. FractionText(m_1) → text7
14. FractionText(b_1) → text8
15. Random(-14, r - 1) → t