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21 November, 12:04

Shannon drew the line of best fit on the scatter plot shown below:

A graph is shown with scale along x axis from 0 to 10 at increments of 1 and scale along y axis from 0 to 15 at increments of 1. The ordered pairs 0, 14 and 1, 13.1 and 2, 12 and 3, 10 and 4, 8.5 and 5, 7 and 5.6, 6 and 6, 4.9 and 7, 3.4 and 8, 2.9 and 9, 2 and 9.5, 0.5 are shown on the graph. A straight line joins the ordered pairs 0,14 and 10, 0.

What is the approximate equation of this line of best fit in slope-intercept form?

A y = negative 7 over 5x + 14

B y = - 14x + 7 over 5

C y = negative 5 over 7x + 14

D y = - 14x + 5 over 7

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Answers (1)
  1. 21 November, 13:14
    0
    Y-intercept of line is 14

    slope of line = (0 - 14) / (10 - 0) = - 14/10 = - 7/5

    Required equation is y = - 7/5 x + 14
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