Question

Please help I have a quiz soon

Answer 1

The option that no represent a linear function is
`f(x)=3^x`

Explanation:

we know that

The graph of a linear function is a straight line

The equation of a linear function in slope intercept form is equal to

`f(x)=mx+b`

where

m is the slope

b is the y-intercept

Verify each case

option 1) we have

`f(x)=3x-2`

This option represent a linear function

where

m=3

b=-2

option 2) we have

`f(x)=x`

This option represent a linear function

where

m=1

b=0

This option represent a linear direct variation function

option 3) we have

`f(x)=3^x`

This option not represent a linear function

This option represent a exponential function

option 4) we have

`f(x)=3x`

This option represent a linear function

where

m=3

b=0

This option represent a linear direct variation function