Which expression can be used to determine the slope of the line that passes through the points (–7, 3) and (1, –9)?

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is

The domain of a function can be represented by which one of the following options? o a. a set of output values o b. a set of f(x) values o c. a set of input values o d. a set of both input and output values

Having a hard time understanding this question (see attachment).