The number yof calories burned after xhours of rock climbing is represented by the linear function y=650x. a. What is the domain of the function? Is the domain discrete or continuous?all real numbers; continuousall whole numbers; discretex≥0x≥0; continuousy≥0y≥0; continuousQuestion 2Explain. The domain is not restricted, so the time can be any real number. The time can only be whole numbers of hours greater than or equal to 0.The time can be any real number greater than or equal to 0.The calories burned can be any number greater than or equal to 0.Question 3b. Graph the function using its domain. burned (in thousands)123450.651.31.952.63.25