9-4 Variation Direct Variation Inverse Variation Joint Variation.

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Presentation transcript:

9-4 Variation Direct Variation Inverse Variation Joint Variation

Vocabulary Direct Variation Constant of Variation As one item increases, so does another … Studying and good grades Exercising and increased strength Practicing guitar and becoming a better musician

#1 Find an equation of variation where y varies directly as x.

#2 Find an equation of variation where y varies directly as x.

Vocabulary Inverse Variation

#3 Find an equation of variation where y varies inversely as x.

#4 Find an equation of variation where y varies inversely as x.

Vocabulary Joint Variation

#7 Find an equation of variation where w varies jointly as x, y, and z.

#8 Find an equation of variation where Q varies jointly as R and S.

Vocabulary Combined Variation

#9 Find an equation of combined variation where P varies directly as q and inversely as r.

#10 Solve the problem using combined variation. Find an equation of combined variation where A varies directly as b and inversely as c. One set of values is A = 4, b = 12, and c = 9. Find A when b = 7 and c = 3.

#10 Solve the problem using combined variation.