The link counter i put on this page tells me that many people accessing this site want to know how to find the y-intercept. This seems stange to me. Basically, the y-intercept is the value of a function at 0. The value of y = mx + c at x = 0 is y = m0 + c or y = c.
On my math site, I just started a page called Finding the y-intercept. Please leave a comment on this blog or on my forum if my page fails to answer the reason why you just did a search on y-intercept.
There are deeper reasons why I called this blog yintercept. I will get into those later. I just wanted to get a page up to help answer the questions of people hitting this site.