When two variables have an inverse relationship, the slope is?

Restrictions on f(x) = 1/x+5 and g(x) = x-2

What is the value of x in the this question ?

The dance committee of pine bluff middle school earns $72 from a bake sale and will earn $4 for each ticket they sell to the spring fling dance. the dance will cost $400 write an inequality to determine the number, t of tickets the committee could sell to have money left over after they pay for this year's dance. what is the solution set of the inequality?