otfeli23 otfeli23

04-04-2017
Mathematics

contestada

A line of best fit is f(x) ≈ −0.86x + 13.5 for the set of points in the table.

Using the equation for the line of best fit, what is a good approximation for the value of the function, f(x), when x = 18?

−5
−2
3
12

Respuesta :

michelleazuara michelleazuara

04-04-2017

f(x) = -0.86x + 13.5
when x = 18, then
f(18) = -0.86(18) + 13.5 = -15.48 + 13.5 = -1.98

i.e. when x = 18, f(x) = -1.98

Answer Link

devon7890 devon7890

04-04-2017

it should be 12 hope this helps

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