The total cost of yearbooks for a school is made up of a $375 set-up fee and $25 for each yearbook purchased.
There is a linear relationship between the total cost and the number of yearbooks
purchased.
What type of variation is this relationship, and what is its initial value?
direct variation, $375
direct variation, $25
partial variation, $25
partial variation, $375

Sample response: if the graph passes the horizontaline test, then the function is one to one. functions that are one to one have inverses that a therefore, the inverse is a hinction compare your response to the sample response above. what did you include in your explanation? a reference to the horizontal-line test d a statement that the function is one-to-one the conclusion that the inverse is a function done