Question 123810This question is from textbook college Algebra
: Solve the problem.
Assume that the sales of a certain appliance dealer are approximated by a linear function. Suppose that sales were $11,000 in 1982 and $47,000 in 1987. Let x=0 represent 1982. Find the equation giving yearly sales S(x).
This question is from textbook college Algebra
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Assume that the sales of a certain appliance dealer are approximated by a linear function. Suppose that sales were $11,000 in 1982 and $47,000 in 1987. Let x=0 represent 1982. Find the equation giving yearly sales S(x).
-----------------
You have two points (0,11000) and (5,47000)
-----------
slope = (47000-11000)/(5-0) = 7200
-----------------------
form is y = mx+b; you know m, y, and x; solve for b
b=11000
---------
S(x) = 7200x + 11000
========================
Cheers,
Stan H.
|
|
|
