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The temperature in a room is changing at a steady rate. If x is the number of minutes since noon, the temperature was -4° C when x = -3 minutes and the temperature was 6° C when x = -5 minutes. Find the rate of change in temperature in degrees per minute....

) A water tank is emptying steadily by 2 liters of water per hour. There were 2 liters of water 6 hours after midnight. Let x represent the number of hours since midnight, and let y represent the number of liters of water in the tank. Find the equation sh...