直线方程的斜截式

GeoGebra 命令及参数

1. Sequence(Segment[(x(S_{grid}) + (int_{grid} * i), y(S_{grid})), (x(T_{grid}) + (int_{grid} * i), y(T_{grid}))], i, 0, (x(U_{grid}) - x(T_{grid})) / int_{grid}) → list_{gridx}
2. Sequence(Segment[(x(T_{grid}), y(T_{grid}) + (int_{grid} * i)), (x(U_{grid}), y(U_{grid}) + (int_{grid} * i))], i, 0, (y(S_{grid}) - y(T_{grid})) / int_{grid}) → list_{gridy}
3. Point(f) → A
4. Point(f) → B
5. If(m ≥ 0, If[x(A) < x(B), (x(B), y(A)), (x(A), y(B))], If[x(A) < x(B), (x(A), y(B)), (x(B), y(A))]) → F_{AB}
6. If(x(A) < x(B), Vector[A, F_{AB}], Vector[F_{AB}, A]) → u
7. If(x(A) > x(B), Vector[B, F_{AB}], Vector[F_{AB}, B]) → v
8. If(m ≤ 0, If[x(B) < x(A), Midpoint[B, F_{AB}], Midpoint[A, F_{AB}]], If[x(B) < x(A), Midpoint[A, F_{AB}], Midpoint[B, F_{AB}]]) → M_{txtrise}
9. If(m ≤ 0, If[x(B) < x(A), Midpoint[A, F_{AB}], Midpoint[B, F_{AB}]], If[x(B) < x(A), Midpoint[B, F_{AB}], Midpoint[A, F_{AB}]]) → M_{txtrun}
10. Intersect(f, yAxis) → C
11. Textfield(f) → InputBox1
12. If(m < 0, If[x(A) ≤ x(B), y(F_{AB}) - y(A), y(F_{AB}) - y(B)], If[x(A) ≤ x(B), y(B) - y(F_{AB}), y(A) - y(F_{AB})]) → changeiny
13. If(m < 0, If[x(A) ≤ x(B), x(B) - x(F_{AB}), x(A) - x(F_{AB})], If[x(A) ≤ x(B), x(F_{AB}) - x(A), x(F_{AB}) - x(B)]) → changeinx
14. Line((-3, g_o(-3)), (3, g_o(3))) → g
15. Textfield(textinputequation) → InputBox2
16. Textfield(m) → InputBox3
17. Textfield(c) → InputBox4