// Helene Martin, CSE 142
// Demonstrates usage of Math methods and type casting
public class MathDemo {
	public static void main(String[] args) {
		double power = (int) Math.pow(10, 3);
		System.out.println(power);
		double average = (double) (3 + 2) / 2;
		System.out.println(average);
		
		int age = 12;
		System.out.println(Math.min(Math.max(age, 0), 40));
		
		double s = slope(4, 5, 7, 13);
		System.out.println("Slope: " + round2(s, 3));
	}
	
	public static double round2(double value, int places) {
		double rounded = Math.round(value * Math.pow(10, places)) / Math.pow(10, places);
		return rounded;
	}
	
	// calculates the slope of the line through (x1, y1) (x2, y2)
	public static double slope(int x1, int y1, int x2, int y2) {
		int dy = y2 - y1;
		int dx = x2 - x1;
		
		double slope = (double) dy / dx;
		return slope;
	}
}