double firstX;
	double firstY;
	double secondX;
	double secondY;
	double kphase1;
	double kphase2;
	double kVal;
	double kValMultiply;
	double mVal;
	double substractY;
	double substractK;
	double yVal;
	double addY;
	double addK;
	string userInput;


	do
	{
		cout << "K-value calculator by Alexander Ensani TE14B" << endl;
		cout << "" << endl;

		cout << "Type in the first coordinate pair" << endl;
		cout << "" << endl;

		cout << "Enter the value of the first X: ";
		cin >> firstX;
		cout << "Enter the value of the first Y: ";
		cin >> firstY;
		cout << "" << endl;

		cout << "Type in the second coordinate pair" << endl;
		cout << "" << endl;

		cout << "Enter the value of the second X: ";
		cin >> secondX;
		cout << "Enter the value of the second Y: ";
		cin >> secondY;
		cout << "" << endl;

		kphase1 = secondY - firstY;
		kphase2 = secondX - firstX;
		kVal = kphase1 / kphase2;

		cout << "The first coordinate pair is: (" << firstX << "," << firstY << ")" << endl;
		cout << "The second coordinate pair is: (" << secondX << "," << secondY << ")" << endl;
		cout << " " << endl;

		cout << "I will calculate the value of K with the following formula: ";
		cout << secondY << " - " << firstY << " / " << secondX << " - " << firstX << endl;
		cout << "" << endl;

		cout << "The value of K is: " << kVal << endl;

		cout << "Would you like to know what the value of M is? Type Y or N" << endl;
		cin >> userInput;
		cout << " " << endl;

		if (userInput == "y" || userInput == "Y") {

			cout << "I will try to solve the following equation: ";
			cout << firstY << " = " << kVal << " * " << firstX << " + M" << endl;
			cout << "" << endl;

			kValMultiply = kVal * firstX;

			substractK = kValMultiply - kValMultiply;
			substractY = firstY - kValMultiply;

			addK = kValMultiply + kValMultiply;
			addY = firstY + kValMultiply;

			if (kValMultiply > 0) {

				cout << "The equation results: ";
				cout << substractY << " = " << substractK << " + M" << endl;
				cout << "" << endl;
				cout << "The value of M is: " << substractY << endl;

			}

			if (kValMultiply < 0) {

				cout << "The equation results: ";
				cout << addY << " = " << addK << " + M" << endl;
				cout << "" << endl;
				cout << "The value of M is: " << addY << endl;

			}
		}

		else if (userInput == "n" || userInput == "N") {
			cout << " " << endl;
			cout << "Okay, we will leave it like this!" << endl;
			cout << "" << endl;
		}
		else {

			cout << "Invalid input, please type Y (Yes) or N (No)." << endl;

		}
	} while (userInput != "n");