the lowest point in the united states is located in death valley and is 282 below sea level. the highest point in the united states is Mt. McKinley, which is 20,236 feet above sea level. use integers to represent the elevation of these landmarks
in a number line which goes from north to south, the upper portion has positive numbers and the lower portion has negative numbers. so the elevation at Mt. McKinley will be written as +20,236 and at death valley it will be -282
