Question: The coordinates of two points are given. ( x 1 , y 1 ) = (10.8,78.7), ( x 2 , y 2 ) = (30.9,

The coordinates of two points are given.

(x1,y1) = (10.8,78.7), (x2,y2) = (30.9, 30.5)

(a)Compute the marginal changeb. (Round your answer to two decimal places.)b= (b)Use the solution from part (a) and

(x1,y1)

to determine an equation of the line

y=a+bx.

(Round your numerical values to two decimal places.)y=

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