.

bac1/q2/algo/tp1/Droites.java

@@ -0,0 +1,20 @@
+public class Droites {
+	public static void main(String[] args) {
+		droite(1, 1, 2, 2);
+		if(appartient(-1,1, 0, 2, 2)){
+			System.out.println("yay");
+		}
+		
+	}
+	public static void droite(double x1, double y1, double x2, double y2){
+		double dir_x = x2 - x1, dir_y = y2 - y1;
+		double a = -dir_y, b = dir_x;
+		double c = a*x1 + b*y1;
+		System.out.println("equation de la droite: " + a + "x + " + b + "y = " + c);
+	}
+
+	public static boolean appartient(double a, double b, double c, double x, double y){
+		return a * x + b * y == c ;
+
+	}
+}