A) Let y be directly related to x. When x = 14, y = 42. What is x when y = 7? x =

b) Let y vary inversely with x. When x = 14, y = 42. What is x when y = 7?

x =

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