Which of the following is a linear function?

A. ƒ(x) = 2 + x + x2
B. f(x)=2/x+7
C. ƒ(x) = √ 2 + 7x
D. ƒ(x) = 2 – 7x

Respuesta :

The answer is D because if you flip it you will have an MX+b equation meaning it is linear. hope this helps