Practice Flashcards: PSAT Advanced Math — function notation and what it stands for | Zestly

Question 1

Function notation $f(x)$

Accepted Answer

A way to name a function $f$ and indicate its input variable $x$.

Question 2

Evaluating $f(4)$

Accepted Answer

Substitute the value 4 for every instance of $x$ in the function rule.

Question 3

Solving $f(x) = 4$

Accepted Answer

Set the entire expression for $f(x)$ equal to 4 and solve for $x$.

Question 4

Function composition $f(g(x))$

Question 5

Order of composition

Question 6

Interpreting $f(x) = y$

Question 7

Testing a rule

Question 8

Domain in context

Question 9

Input vs. Output

Question 10

What $f(x)$ does not mean

Question 11

Negative input evaluation

Question 12

Identifying input units