## would this be right?

Simplificatation, evaluation, linear equations, linear graphs, linear inequalities, basic word problems, etc.
illuminati58
Posts: 9
Joined: Sun Jul 12, 2009 11:23 pm
Contact:

### would this be right?

Suppose you have a lemonade stand, and when you charge \$1 per cup of lemonade you sell 50 cups. But when you raise your price to \$2 you only sell 25 cups. Write an equation for the number of cups you sell as a function of the price you charge. Denote "C" for number of cups, and "P" for the price you charge. Assume the function is linear.

C = 50 x 1p and C = 25 x 2p

stapel_eliz
Posts: 1628
Joined: Mon Dec 08, 2008 4:22 pm
Contact:
Suppose you have a lemonade stand, and when you charge \$1 per cup of lemonade you sell 50 cups. But when you raise your price to \$2 you only sell 25 cups. Write an equation for the number of cups you sell as a function of the price you charge. Denote "C" for number of cups, and "P" for the price you charge. Assume the function is linear.

C = 50 x 1p and C = 25 x 2p
I'm not sure what the above is meant to mean...?

Try plugging numbers in. If the price is P = 1, then what is C equal to? If the price is P = 2, then what is C equal to?

Given these two data points, (P, C), what is the slope of the line modelling C? What then is the line equation?