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Mathematics
Precious Boyer
28 October, 04:09
What is the value of y when x=9
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Riley Crane
28 October, 05:30
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Ok could be direcly proportional or inversely proprtional
directily proportional, is
x1/y1=x2/y2
where you are given x1, y1 and x2 or y2
inversely proprtional is
(x1) (y1) = (x2) (y2)
where yo are given x1, y2 and x2 or y2
directly
y1=2
x1=3
y2=?
x2=9
3/2=9/?
3?=18
?=6
y=6
inverse
y1=2
x1=3
y2=?
x2=9
(3) (2) = (9) (?)
6=9?
2/3=?
if directly proportional, y=6
if inversely proportion, y=2/3
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Jonathan Hogan
28 October, 07:46
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2/3 = 9/y
cross multiply
2y = 9 * 3
2y = 27
y = 27/2
y = 13.5 or 13 1/2
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