Question

Which graph represents an exponential function?

Answer 1

Graph 3 is exponential function.

Explanation:

We are given four different graph. We need to choose exponential graph.

Graph 1: It is square root graph because the value of x and y not negative in this graph. Graph is slight curve.

`f(x)=√(x)`

False

Graph 2: It is is cubic graph because it start from bottom of the coordinate plane and end at top of the coordinate plane.

`f(x)=x^3`

False

Graph 3: It is exponential graph because range is all positive real number and domain is all real number.

`f(x)=3^x`

True

Graph 4: It is rational function graph because here we have vertical asymptote (x=-2)

`f(x)=(1)/(x+2)`

False

Answer 2

Answer: C

Explanation:

A) f(x) = √x

B) f(x) = x³

C) f(x) = 2ˣ x is the exponent so it is an EXPONENTial function

D) f(x) =
`(1)/(x)`