(a) If y varies directly as x, and y=24 when x=16, find y when x=12. (b) In a formula, z varies inversely as P. If Z is 200 when P is 4, find z when P is 10.

Which of the points a(6, 2), b(0, 0), c(3, 2), d(−12, 8), e(−12, −8) belong to the graph of direct variation y= 2/3 x?

Ms.ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms.ortiz charge per kilogram of tomatoes to make on a load of tomatoes?

Aramp rises 4 feet over a distance of 10 feet. what is the length of the ramp?