Question

multiple-choice question write the equation y = 5x using function notation. f(x) = 5x y = 5(f)x

Explanation:

Step1: Recall function notation

Function notation uses \( f(x) \) (or other letters like \( g(x) \), \( h(x) \)) to represent \( y \) in a function. So if \( y = 5x \), we can replace \( y \) with \( f(x) \).

Step2: Apply to the equation

Substituting \( y \) with \( f(x) \) in \( y = 5x \), we get \( f(x)=5x \). The second option \( y = 5(f)x \) is not a valid function notation as it misrepresents the function - variable relationship.

Answer:

A. \( f(x) = 5x \)