INVERSE VARIATIONS

​Direct Variation

• y varies directly as

• y is directly proportional to

• y is proportional to x​

​RECALL

​Inverse Variation

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Multiple Choice

The fare f of a passenger varies directly as the distance d of his destination

• $$F=kd$$  

• $$D=kf$$  

• K = df

• K = fd

Fill in the Blanks

The cost C of fish varies directly as its weight w in kilograms

Open Ended

An employees salary S varies directly as the number of days d he has worked

​What is inverse variation?

​It occurs whenever a situation produces pairs of numbers whose product is constant

​Find the equation and solve for k

​y varies inversely as x and y = 6 when x = 18

Subject | Subject

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