Code:
import java.util.Random;
import java.util.Scanner;
public class Position_Point_WRT_Line
{
public static void main(String args[])
{
Random random = new Random();
int x1, x2, y1, y2;
x1 = random.nextInt(10);
x2 = random.nextInt(10);
y1 = random.nextInt(10);
y2 = random.nextInt(10);
System.out.println("The Equation of the line is : (" + (y2 - y1)
+ ")x+(" + (x1 - x2) + ")y+(" + (x2 * y1 - x1 * y2) + ") = 0");
System.out.println("Enter the point :
Scanner scan = new Scanner(System.in);
int x, y;
x = scan.nextInt();
y = scan.nextInt();
int s = (y2 - y1) * x + (x1 - x2) * y + (x2 * y1 - x1 * y2);
if (s < 0)
System.out
.println("The point lies below the line or left side of the line");
else if (s > 0)
System.out
.println("The point lies above the line or right side of the line");
else
System.out.println("The point lies on the line");
scan.close();
}
}
Output:
The Equation of the line is : (-2)x+(-9)y+(81) = 0
Enter the point :
2
3
The point lies above the line or right side of the line
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