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1. Which of the following 1 point illustrates a direct variation? * 2. The cost C varies directly as 1 point the number n of books is written as _. * 3. What is the value of k (the 1 point constant of variation) in the equation y = kab? * 4. m varies directly as n but 1 point inversely as [3. What is k if m is 16, n is 8 and p is 18? * 5. A journey takes 8 hours at 60 1 point km/hr. How long will the same journey take at 70 km/hr? * 6. Which of the following 1 point illustrates a direct variation? * 7. The cost C varies directly as 1 point the number n of books is written as _. * 8. What is the value of k, if y 1 point varies directly as x and y=21 when x=3? * \f10. How would you translate the phrase \"y varies inversely as x" into mathematical equaen?* 1 paint