Basically, you have to follow the rules, no tricks, just knowing how to use it all. We’ve added the line features to help you sort this through…step by step

Let’s start with a couple of examples.

Find the equation of a line given a point and slope m (click here):

All it takes is solving a linear equation to compute the y=intercept b

Let’s continue with the most challenging one, the tangent line. It is only challenging b/c it requires derivation, and it is using all the line features we’ve seen so far. So we have a function and a point, we have to start by finding the slope (that’s where we derivate), compute the slope at a given point, now we can find the tangent line ( slope + point = line)

Here is an example (click here):

You can check out more examples here.

Cheers,

Michal