which of the following functions is most likely to have the smallest value for y if x is large? (Assume k is positive.) a direct variation function with a small value for k a direct variation function with a large value for k an inverse variation function with a small value for k an inverse variation function with a large value for k

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books