You can put this solution on YOUR website! don't know if this is
the answer you are looking for, but here is an answer. the trick
to making an equation that can be graphed in x and y coordinates
is to create an equation that makes y a function of x. before we
do that, we create an equation expressing the relationship we
are looking for. first i will plot revenue as a function of
price and units sold. then i will plot number of units sold as a
function of price. you may want to reverse that, i.e. plot
number of unit sold as a function of price, then plot revenue as
a function of price and units sold. i believe they are looking
only for the equation of number of units sold in relationship to
price. if that's all you're interested in, skip to the second
equation. otherwise, read read on. revenue per month = units
sold per month * price per unit let R = revenue per month let U
= number of units sold per month let P = price then R = P * U
let 1*x = x = increase in price let 3*x = decrease in number of
units sold f