SUMMATIVE TEST: Variation

The cost (c) of pork varies directly as the number (n) of pens is written as

The speed (r) of the car is inversely proportional to the time (t) travelled id written as

Which is an example of a direct variation?

A porsche 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 direct directly as x and y=40 when x=5

What is the constant of variation?

If y varies inversely as x and y=1/3 when x=8, find y when x=4.

If 3 students can do a task in 8 days, how many students can do the same task in 6 days?

Which type of variation is illustrated on the given table?

Which of the following equations represents an equation of variation if y varies inversely as the square of x, and y=8 when x=5?

y=3x