What are other questions similar to? :

if f(x) = x^2 - 9 / x^2 - 4, the domain of x is all real numbers except
a) -2 and 2
b) -3 and 3
c) 0
d) 2
e) 2 and 3.

(the answer for this question is a)

Literally just replace the nine and four with ANY other numbers.

Ifound this on google “that means that the graph of a function with direct variation has these features: it is a straight line: because the slope is the ratio y/x = k. it passes through the origin (0,0): because y = kx = k (0) = 0.” i hope this you for what your looking for