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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
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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-example-1
User Rolznz
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1 Answer

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A. You get the equation
y(x)=(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 = (y)/(9) = (7.2)/(9) = 0.8

User Steve Murdock
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