X=C

1. The difference between finding the limit of a function as x=c and pluging in x=c is that finding the limit at x=c your finding a coordinate as you approach x from both sides. meaning it doesn't exist so ur trying to get as close as possible to get an answer. there has to be a domain issue.. i think
just plugging x=c to the function, that is the answer. because it actually exists.

2.the similarities between finding the slope and the derivative is nothing because they are the SAME. your finding the SLOPE. the difference between them is the derivative is finding the slope of the tangent line in that function the slope is the slope .