List the coordinates of two points on the graph in ( x , y ) form. (__0_,__24000

Question

List the coordinates of two points on the graph in (x,y) form.

          (__0_,__240000_), (_2.5__, _216000__)

b)       Find the slope (rate ofdepreciation) of this line:

           Answer: -96000

           

Show your work here: 240000 - 216000/ -2.5 = - 9600 depreciationper (value on x axis)

c)       Find the equation of thisline in slope-intercept form.

         Answer:

Show or explain your work here:

d)       If the rate ofdepreciation continues at the present rate, what will be theplane’s value in the year 2017? Show how to use theequation from part c) to obtain your answer.

         Answer:

Show or explain your work here:

2)       Suppose that the width ofa rectangle is 5 inches shorter than the length and that theperimeter of the rectangle is 50 inches. The formula for theperimeter of a rectangle is P=2L+2W.

a)       Set up an equation forthe perimeter involving only L, the length of therectangle.

         Answer:

b)       Solve this equationalgebraically to find the length of the rectangle. Find the widthas well.

         Answer: Length ______, Width ______

          Show yourwork here:

Explanation / Answer

You seem to have a and b already. I'll start with c, then. y = mx + b m = -9600 y = -9600x + b we need to find b, so use a point on the line; when x = 0, y = 240000 240000 = b x = 0, so slope goes out. b = 240000 y = -9600x + 240000 d) You haven't given us some information, since we don't knowif the x value is measured in years, two years, or tens of years...etc. However, use whater 2017 means and plug it into the x valuefor the above equation. P = 2L+2W however, L = W-5 substitute into the above P = 2(W-5) + 2W P = 4W - 10 50 = 4W -10 60 = 4W W = 15 go back to your above equation; L = W-5 L = 10 check your answer 2(10)+2(15) = 50

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