what is the function rule of(0,1), (1,3), (2,9), (3,27), (4,81)

Question

anonymous · Answer

y=2x+1
y=mx+b
b=y-intercept which is (0,y)
m=slope
slope formula is:
y2-y1/x2-x1

anonymous · Answer

thank you but thats not what im looking for
im looking for somthing like y=2x - 2

anonymous · Answer

(0,1) is the y-intercept, -2 is not your y-intercept based on the points you given.

jdoe0001 · Answer

$\large \begin{array}{lrlll}
x&y\
\hline\
0&1\implies 3^0\
1&3\implies 3^1\
2&9\implies 3^2\
3&27\implies 3^3\
4&81\implies 3^4 
\end{array}$

notice anything?

anonymous · Answer

that helps but i need the answer

anonymous · Answer

Maybe something like$$f(x)=3^x$$That function is defined for all values of x; based on the way it was described, the domain might only be$$x \in \left\{ 0.1.2.3.4 \right\}$$