what is the difference between an expression and an equation and how do the graphs differ?

Answer 1

Mathematical expression is a statement that is right most of the time but not all the time like theorems are mathematical expressions in that they are right almost all of the time, but not all the time.

An equation is based on Mathematicla laws which are right 100 % of the time.

Business and liberal acts math makes use of theorems a lot in mathematical models of sales forecast population growth etc.

Mathematical expressions, theorems, however have no place in engineering, because in engineering you have to be 100% right 100% of the time.

Good example of that is look at how long the twin towers stood on 9/11 after being slammed by the jet liners each weighing close to 100 tons and traveling at over 400 knots per hour.
The engineer who designed them had to be right 100% for them to with stand the imjpact and stand as long as they did.

Answer 2

a million. achieveable strategies (the two areas) 2. expression set equivalent to something... 3. a. has no 2 y's that are an analogous value b. can draw a vertical line everywhere on the graph without crossing greater beneficial than a million factor at a time c. make a table of various achieveable coordinates & make particular no longer 2 ys have an analogous value 4. a. (0,4)(-6,4)=no, yet (4,0)(4,-6)=definite b. any enclosed shape=no, yet a diagonal line=definite c. x+y=2 = definite, y^2-2x=0= no