If f(x) is a linear function, which statement must be true?
f(x) has no constant term.
f(x) has no x2-term.
f(x) has no terms with a coefficient other than 1.
f(x) has no x-term.

"f(x) has no -term."

step-by-step explanation:

the linear function's form is given as

there does not have be a constant term, an example is y = 2x there cannot be an term because that makes it a quadratic equation, no longer a linear function. the function can have terms with coefficient other than 1. if there is no x term, it is not a linear function.

as seen, option 2 is correct.

F(x) has no x2- term