Solving linear inequalities proceeds just like solving equations.  Well, mostly.  However, there are three key differences which involve flipping the inequality side in certain circumstances, having many solutions, and combining multiple inequalities in a compound nature.  For that last one, think: FANBOYS.  Duration: 11:47

The Pythagorean Theorem is ordinarily used to find a missing side length of a right triangle.  Things only get tricky when trying to decide whether to add your square or subtract them.  Which one you do all depends upon the hypotenuse.  Duration: 8:51

After plotting points in the coordinate plane, you can do much marvelous mathematics with them once you have connected those points with a segment or a line.  You can use the Pythagorean Theorem to find the distance between the points and use rise over run to calculate the slope of the line that connects them.  Combining the slope with any point on the line, you can also write the linear equation of that line.  This video reviews all of these techniques, though I probably should have divided it into multiple parts...  Duration: 19:45