Question

What function is shown in the graph?

A) y = -2x

B) y = 2-x

C) y = 2x – 5

D) y = 2x – 5

Answer 1

D) y-2x-5

Explanation:

Answer 2

`y=-2^x`

Explanation:

The parent function of the given graph is y=2^x because all the given options have basic exponent 2^x

LEts take the basic function as
`y=a(2)^x`

To find the value of 'a', pick a point from the given graph

LEts pick (0,-1), plug in the values and find out 'a'

`y=a(2)^x`

`-1=a(2)^0`

a=-1

The equation becomes

`y=-1(2)^x`

`y=-2^x`