SOLUTION: The library charges 50 cents a week for a late book. What is the equation for the total fee? What are the variables? What are the x and y intercepts? I am also trying to find the

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: The library charges 50 cents a week for a late book. What is the equation for the total fee? What are the variables? What are the x and y intercepts? I am also trying to find the       Log On


   

Question 390505: The library charges 50 cents a week for a late book. What is the equation for the total fee? What are the variables? What are the x and y intercepts? I am also trying to find the slope of the line.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi,        

Letting y represent the amount of the fine, and x the number weeks late

Write as we Read

  y = .5x   (amount in dollars for the fine)

Using the standard slope-intercept form for an equation of a line y = mx + b

  where m is the slope and b the y-intercept.  

  slope m = .5 = 1/2  

y-intercept (when x=0) is Pt(0,0)

x-intercept (when y = 0) is Pt (0,0)

Note: slope of the line: as y increases/decreases by 1, x increases/decreases by 2