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y = -4x - 10 (Answer A)

Step-by-step explanation:

Any line parallel to the given y = -4x + 3 has the same slope:  -4.

Starting with y = mx + b, and substituting -4 for m, -3 for x and 2 for y, we get:

2 = -4(-3) + b, or b = -10, and so the desired equation is

y = -4x - 10 (Answer A)

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55.44 inches

step-by-step explanation:

part a. assuming a perfectly linear relationship, we can find the slope from the first two data points.

slope = m = (change in rainfall)/(change in years)

= (61.80 -62.33)/(2005 -2004) = -0.53/1 = -0.53

then the point-slope form of the equation of the line can be written as

y = m(x -h) +k . . . . . m = -0.53, (h, k) = (0, 62.33)

y = -0.53x +62.33 . . . x = years after 2004

part b. in 2017, x = 2017 -2004 = 13. then the predicted rainfall is

y = -0.53·13 +62.33 = 55.44 . . inches

the predicted rainfall in 2017 is 55.44 in.