Problema Solution
A 4-color web printing press depreciates from the year 2006 to the year 2010. It was purchased new in the year, therefore x=0 represents the year 2006. Y-axis= price in $ amount from 12, 000 to 120,000. a. List the corrinates of any two points. b. Find the slope of this line c. find the linear equation of this slope-intercept form
Answer provided by our tutors
This is a math question, that said:
m (slope)= Rise/Run
Rise=y2-y1, Run= x2-x1
so: Rise =102000-114000=-12000
Run=3-1=2
m=12000/2
b) m=-6000
Slope intercept form is:
y=mx+b, we need b so:
b=y-mx
substitute any value for either point:
b=114000-(-6000)(1)
b=114000+6000
b=120000
The equation is:
c)y=-6000x+120000
To get the value in 2015 you get the amount in helf years being that that is the scale of the x axis. So:
2015-2006=9 years=18 half years. Substitute that value in the equation:
y=-6000(18)+120000
d)y=12000