Will give brainiest promise  determine the dependent and independent variables if this data were plotted. what would the slope of the graph represent? for every increase of 1,000 feet in altitude, the boiling point of water increases by 1.8 degrees fahrenheit. for every increase of 1,000 feet in altitude, the boiling point of water decreases by 1.8 degrees fahrenheit. for every decrease of 1,000 feet in altitude, the boiling point of water decreases by 1.8 degrees fahrenheit. for every increase of 1,800 feet in altitude, the boiling point of water decreases by 1 degree fahrenheit. for every decrease of 1,800 feet in altitude, the boiling point of water decreases by 1 degree fahrenheit.