Determine whether or not the situation describes a function give a reason for your answer the amount of federal income tax you pay is a function of taxable income

Choose the point slope form of the equation below that represents the like that passes through the points (-6,4) and (2, 0)

Can someone pls ! pls answer all. no explanation needed..

Adoctor administers a drug to a 38-kg patient, using a dosage formula of 50 mg/kg/day. assume that the drug is available in a 100 mg per 5 ml suspension or in 500 mg tablets. a. how many tablets should a 38-kg patient take every four hours? b. the suspension with a drop factor of 10 ggt/ml delivers the drug intravenously to the patient over a twelve-hour period. what flow rate should be used in units of ggt/hr? a. the patient should take nothing pills every four hours. (type an integer or decimal rounded to the nearest hundredth as needed.)