Variation

The cost c varies directly as the number n of pencils is written as

The speed r of a moving object is inversely proportional to the time t travelled is written as

Which is an example of a direct variation?

A car travels a distance of d km in t hours. The formula that relates d to t is d = kt. What kind of variation is it?

y varies directly as x and y = 32 when x = 4. Find the constant of variation.

What happens to T when h is doubled in the equation T = 4h?

If y varies directly as x and y = 12 when x = 4, find y when x = 12.

Mackee’s income varies directly as the number of days that she works. If she earns Php 8,000.00 in 20 days, how much will she earn if she worked 3 times as long?

If s varies directly as t and inversely as v, then which of the following equations describes the relation among the three variables s, t, and v?

What is your name?