Write an equation for the below diagram. Find a solution for your equation and explain how you solved it.

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

Can someone answer this question? : )

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