Answer:
A value for x.
Step-by-step explanation:
For example,

Substitute a random number for x to find the value of y, after which you'll have a point.
Answer:
i think its -31
Step-by-step explanation:
if im wrong im sorry
Answer:
9x-2
Step-by-step explanation:
f^-1(x)=1/f(x)=9x-2