finding an equation from a table

Algebra
Tutor: None Selected Time limit: 1 Day

x values= 1, 2, 3, 4 and y values= 1, 2, 4, 8

Oct 12th, 2015

Ok, 

i'm assuming the first thing you do is plot the points onto a graph

Points

(1,1),(2,2,)(3,4),(4,8)

Plot these on to a piece of paper


This looks like a non linear piecewise function

notation example for writing http://www.shelovesmath.com/algebra/advanced-algebra/piecewise-functions/

Answer: f(x)=[y=x if x<=2

                    [y=1+x if x=3

                    [y=2x if x=4  

Oct 12th, 2015

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Oct 12th, 2015
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