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Mathematics 19 Online
OpenStudy (anonymous):

Find the equation of the best­ fit line from the tomato plant table above.  Chart Height (inches) # of Tomatoes 27 12 33 18 19 9 40 16 31 15 Please help! Going on vacation this weekend and want to be done with school. This is my last assignment

OpenStudy (anonymous):

I feel your struggle. Well, someone will help.

OpenStudy (amoodarya):

you want best fit ,in polynomial ? or other form ?

OpenStudy (anonymous):

I am not sure it is for a scatter plot

OpenStudy (amoodarya):

do you plot points ?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

i am sorry this subject is confusing to but i know how to make the scatter plot just do not know how to find equations.

OpenStudy (amoodarya):

use microsoft excel type the point it is very easy to get scatter plot in it

OpenStudy (anonymous):

I unfortunately do not have Microsoft yet. I just got a new computer.

OpenStudy (amoodarya):

you can use online program , find by google

OpenStudy (anonymous):

ok will it help find the equation too?

OpenStudy (amoodarya):

usually but you said ,you are able to find the equation !

OpenStudy (amoodarya):

you have 5 points you can find a polynomial in 4 degree , that passes all points

OpenStudy (amoodarya):

\[f(x)=-0.0015035394*x^4+0.17208577*x^3-7.2202317*x^2+132.03964*x-877.64305\]

OpenStudy (amoodarya):

it is standard form do you want , something like that ?

OpenStudy (amoodarya):

OpenStudy (anonymous):

I understand how to create the graph i do not know how to find the equation

OpenStudy (mathstudent55):

|dw:1435884313366:dw|

OpenStudy (anonymous):

I understand how to draw the chart I am confused on how to find the equation?

OpenStudy (amoodarya):

newton backward method for n'th degree polynomial ,can use or regression line for line

OpenStudy (amoodarya):

what degree you want to interpolate ?

OpenStudy (mathstudent55):

The problem asks for the best fit line. Why not treat it as a straight line? Use to points to find the slope, and find the y-intercept. Then use that information to find the equation of the line.

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