ll phones proliferate, the number of s to drop. The number of pay phones from 20

Question

ll phones proliferate, the number of s to drop. The number of pay phones from 2004 through 2009 (in rmillions) are shown in the following table (x corresponds to 2004). 0 1 2 3 45 Number of Pay Phones, y 1.30 1.15 1.00 0.84 0.69 0.56 b) Plot the number of pay phones () versus the year () Then, draw the stralght line L through the points (o, 1.30) and (5, 0.56). Flash Player version 10 or higher is required for this question. You can get Flash Player free from Adobe's website a Submission Data (b) D (y-1.3) (x)--(0.74) (5) y Assuming that the trend continues, estimate the number of pay phones in 2010. p.412 pay phones

Explanation / Answer

b)

points are (0,1.30) and (5, 0.56)

find slope as

m= (0.56-1.30)/(5-0)

= -0.148

Equation is

y=mx+b

y= -0.148x + 1.30

c)

Substitute x = 2010 -2004 = 6

y= -0.148*6 + 1.30

=0.412

=0.41 [rounded to two decimal places]

Please let me know in comment if you get any one incorrect.

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