SOLUTION: Which equation represents a power function that is decreasing and has a graph that passes through the point (2,1)? A. y=(1/2)x^-1 B. Y=2x^-1 C. y=(1/4)*(x^2) D. y=4*(2^-x)

Algebra ->  Coordinate-system -> SOLUTION: Which equation represents a power function that is decreasing and has a graph that passes through the point (2,1)? A. y=(1/2)x^-1 B. Y=2x^-1 C. y=(1/4)*(x^2) D. y=4*(2^-x)       Log On


   

Question 1177937: Which equation represents a power function that is decreasing and has a graph that passes through the point
(2,1)?
A. y=(1/2)x^-1
B. Y=2x^-1
C. y=(1/4)*(x^2)
D. y=4*(2^-x)
Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!
B is the only function that meets all the criteria.