A discussion with a student starting the term

1-What is Average?  Average is the regular or the ordinary. In business average is when the product or the profit is not top class but not mediocre either. In other words, what you expect most of the time.  2- What is a straight line in Business? A straight line in business is when the procedure to make  profit is just an one step to follow. you don't have to go through a lot of procedures in order to reach your goal. Straight line is a relationship between two variables and two coefficients  that represents proportionality. WHAT YOU HAVE TO DO IS: to know what is the variable,  & what is the coefficient is the step I would like you to think now, and from the general mathematical presentation, to move into the real life translating the abstract algebraic world into the specific real. This is the first step for modeling.   3- What is the relationship between a line and a plan? The relationship between a line and a plan is a plan consists of a bunch of lines or a plan makes from more than one line. Correct more or less - what is the relationship between a point and a line, a line and a plane? How many dimensions does a point, a line and a plane have? 4- What is the relationship between a line and a curve? The relationship between a line and a curve is a curve is a bent line. i.e. lines or curves have the same dimensions - two - but while lines present proportionality, curves are not proportional, but something more dynamic in the relationship of two variables. The the question is how many types of curves do you know, and  what each type of a relationship each curve represents?