In the future, post at most two problems per thread, and then it's preferred if both problems are in the OP, and not added later.

For all these problems, you're being asked to first find the equation of a line, for which you need a point on the line, and its slope. Then, you're asked to find another point on that line.

Concerning your first problem: you need to find the x at which the derivative is -1. So, what do you get for f'(x)?

Concerning your second problem: you already have x = 0 for the point of linearization. All you need here is f(0), which is what?

Concerning your third problem: I have no idea what the aln function is. You're theoretically given the same information as in your second problem. All you really need is f(1), which is what?