#include <iostream>

using namespace std;

int main()
{
	int ax, bx, az, bz, x, y;
		cout << "輸入第一個方程式的a:";
		cin >> ax;
		cout << "輸入第一個方程式的b:";
		cin >> bx;
		cout << "輸入第二個方程式的a:";
		cin >> az;
		cout << "輸入第二個方程式的b:";
		cin >> bz;
		cout << "輸入x:";
		cin >> x;
		cout << "輸入y:";
		cin >> y;

	if (y==ax*x+bx && y==az*x+bz){
		cout << "你輸入的(" << x << "," << y << ")是" << "y=" << ax << "*x+" << bx << "和y=" << az << "*x+" << bz << "的交點";
	} else {
		cout << "你輸入的(" << x << "," << y << ")不是" << "y=" << ax << "*x+" << bx << "和y=" << az << "*x+" << bz << "的交點";
	}
	return 0;
}