Can a function be increasing and negative on the same interval?

Areal estate agent earns $32,000 a year plus $1,000 for each apartment he sells. write an equation that shows the relationship between the number of apartments abe sells,n, and the total amount he earns in a year,e. what is the total amount abe would earn from selling 10 apartments in one year

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

In the diagram below,abc is congruent to dec what is the value of x