SOLUTION: https://ibb.co/q0M8TyD Determine the curve of best fit. a) y=-2.7x + 7.4 c) y = 0.95x2+ 2.08x + 0.75 b) y =-.05x - 3.26 d) y = 0.95x^2 - 2.08x - 0.75

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: https://ibb.co/q0M8TyD Determine the curve of best fit. a) y=-2.7x + 7.4 c) y = 0.95x2+ 2.08x + 0.75 b) y =-.05x - 3.26 d) y = 0.95x^2 - 2.08x - 0.75      Log On


   

Question 1206257: https://ibb.co/q0M8TyD
Determine the curve of best fit.
a) y=-2.7x + 7.4
c) y = 0.95x2+ 2.08x + 0.75
b) y =-.05x - 3.26
d) y = 0.95x^2 - 2.08x - 0.75
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39623) About Me  (Show Source):
You can put this solution on YOUR website!
Plot your points and think about the shape and other details.

NOT a line. It appears could be quadratic. You have two to choose from now. Test with any two points of your set of ordered pair.

The choice which seems to work best is (d) 0.95x%5E2-2.08x-0.75.

Answer by ikleyn(52835) About Me  (Show Source):
You can put this solution on YOUR website!
.

Go to web-site

https://www.emathhelp.net/en/calculators/probability-statistics/quadratic-regression-calculator/

Use free of charge online calculator there, specially developed and intended for finding best fitting parabolic curves.

Input your data and click the "Calculate" button.

You will get the answer next instance.

The answer is (d).

The referred online calculator will provide it with great precision (ten or more decimal places for coefficients).

It will also explain you the methodology which it uses, and will provide all necessary formulas,
so it is like a self-sufficient textbook on the method, at the same time.