Functions

Question 1

Name the independent and dependent variables in z=2u^3

Answer 1

Dependent = z
Independent = u

Question 2

What does a function do and what are its 3 main parts in words?

Answer 2

Relates an input to an output. Parts: input, relationship, output

Question 3

What are the 2 important pieces of a fxn’s definition?

Answer 3

1) must work for very possible input value of x (“covers” x)

2) each x must have only one relationship - related to exactly one y (“single valued”, passes linear line test)

Question 4

What are ordered pairs?

Answer 4

Input (x) followed by output (f(x) or y). Says function takes in x and outputs y.