7.2

Question 1

The _________ of a function f is the set of all inputs

If correspondence is listed in table or as a set of ordered pairs, the domain is the first set of all first coordinates

If function is described by a graph, the domain is the set of all first coordinates of the points on a graph

If the function is described by an equation, the domain is the set of all numbers for which the value of the value of the function can be calculated

If the function is used in an application, the domain is the set of all numbers that make sense as inputs in the problem

Answer 1

Domain of a function

Question 2

Graph points
Open dots mean?
No end points?
Arrows on the ends? 
Solid dot

Answer 2

Open dot-no function value {x|x is a real number and x equal not equal

No end points-domain/range that extends infinity both positive and negative

Arrows - graph extends without end

Solid dot-function is not defined for values of x