Direct variation: if y=9 when x=3/2, find y when x=1.

set the equation

y = a*x

assign the given numbers to the equation

9 = a * 1.5

a = 9/1.5 = 6

we can infer that the equation is y=6x

thus, when x = 1, y = 6

the correct answer is the second option

here is the

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