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Mathematics 16 Online
OpenStudy (anonymous):

help?

OpenStudy (anonymous):

23. Which kind of function best models the data in the table? Use differences or ratios. x y 0 1.7 1 6.8 2 27.2 3 108.8 4 435.2 linear quadratic exponential none of the above

hartnn (hartnn):

' Use differences or ratios.' did you try ratios ?

hartnn (hartnn):

6.8/1.7 =.... ? 27.2/6.8=... ? ... 435.2/108.8=...?

OpenStudy (anonymous):

yes i did just couldnt get the right answer

hartnn (hartnn):

what ratio are you getting ?

hartnn (hartnn):

6.8/1.7 =.. ?

OpenStudy (anonymous):

13.6 : 3.4

hartnn (hartnn):

whats that ? 6.8/1.7 =4 you'll get 4 for every y value/ x value so, you can write the equation as y/ (x-1) = 4 or y=4(x-1) is this linear or quadratic or exponential ?

OpenStudy (anonymous):

oh wow i was going it completely wrong...

OpenStudy (anonymous):

and quadratic

hartnn (hartnn):

umm...no ..a quadratic equation has ^2 (2nd power/exponent) in it its not the case here.

OpenStudy (anonymous):

umm... im not sure i know what im doing

hartnn (hartnn):

you are trying to find what kind of model f(x) represents.

hartnn (hartnn):

* y represents

hartnn (hartnn):

y=4(x-1) is a linear equation.

OpenStudy (anonymous):

im still lost.. lol sry

hartnn (hartnn):

i tried ....is all i can say.

OpenStudy (anonymous):

ok thx anyway.

hartnn (hartnn):

good luck!

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