babygirl651 babygirl651

02-01-2017
Mathematics

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y varies directly as x,and y =4.5 and x=0.5. A)write an equation that relates x and y. B)Find y when x =1.2. C)Find x when y=7.2

y varies directly as x,and y =4.5 and x=0.5. A)write an equation that relates x and y. B)Find y when x =1.2. C)Find x when y=7.2 class=

Verified Answer :

xEngineerOrg xEngineerOrg

02-01-2017

AYou get the equation \(y(x)=\frac{4.5}{0.5} \cdot x = 9 \cdot x\)
B. For x = 1.2, you get \(y = 9 \cdot 1.2 = 10.8\)
C. For y = 7.2, you get \(x = \frac{y}{9} = \frac{7.2}{9} = 0.8\)

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