The town library is raising money by selling old books for $4each. which equation can be used to find the amount of money raised if the number of books sold is known? let x represent the number of books sold and y represent the amount of money raised.

Because they make 4 dollars for every book sold, a representative equation would be:

Ifound this on google “that means that the graph of a function with direct variation has these features: it is a straight line: because the slope is the ratio y/x = k. it passes through the origin (0,0): because y = kx = k (0) = 0.” i hope this you for what your looking for

25% increaseplus i think decrease i only know increase: ((