Hello,
As per my understanding of your question, you have an equation of form 
. In first part with given two points on curve you want to find the variable b. In second part with a point and value of b you want to plot the curve.
. In first part with given two points on curve you want to find the variable b. In second part with a point and value of b you want to plot the curve. Part I:
Given two points on curve as (0.0226336, 24.988) & (0.0180306, 0.179498).
Let points be 
As both points satisfy the power law equation we can write:
dividing both these quations you get:
Take log on both sides of this equation you get:
y1 = 24.988;
y2 = 0.179498;
x1 = 0.0226336;
x2 = 0.0180306;
b = log(y1/y2) / log(x1/x2);
disp(b);
Part II:
To plot the equation we need to find the value of a.
As given point satisfy the equation we can use this to find a.
we can use this to find a.
y1 = 24.988;
x1 = 0.0226336;
b = 2;
a = y1/x1.^b;
x = -10:0.01:10;
%x goes from -10 to 10 with an increment of 0.01
y = a*x.^b;
plot(x, y)
