According to the ruler of postulate what does the set of points on any line correspond to?

What point is the projection of q on a) r b) s c) t

An alternative to car buying is to make monthly payments for a period of time, and then return the vehicle to the dealer, or purchase it. this is called

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"