Question

The graph of an exponential function is given. Which of the following is the correct equation of the function? (2 points)

Answer 1

B

Explanation:

starts from 2nd quad and ends in the 1st quad.

rather b or c, but b is closer.

Answer 2

Option III

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.