Question

select the expression that represents a rational function:
7=6/3x-2
f(x)=6/3x+2
x/6=6/3x+2
y=3x+2
plz help

Answer 1

@sam_avd brackets are critical for this question.
I think you mean
7=6/(3x-2)
f(x)=6/(3x+2)
x/6=6/(3x+2)
y=3x+2
Hint:
Two of the choices are equations, not functions.
Of the remaining two, we can distinguish a rational function by the definition that
a rational function is a function of the form
\(\large \frac{p(x)}{q(x)}\)
where p(x) and q(x) are polynomials.
see also
http://www.math.utah.edu/~wortman/1050-text-rf.pdf

Answer 2

thank you so much!;)