Answer:
Option III
Step-by-step explanation:
Given is a graph of an exponential function.
From the graph we observe that the graph passes through
(0,1) (1,0.45),(-1,2.22)
Hence we must have our equation satisfying all the above
I point is satisfied by all the equations.
Let us try with second point
I Option . When x=1, y =2.4 hence not right.
II option:
When x =1, y =0.31 hence not the required point. Hence 2 is not right
III option:
When x=1, y =0.45 satisfied
x =-1, y = 1/0.45 =2.22
This is also satisfied
IV option :
When x=1, y=1.8 hence not right
Only III option is right.
