Mathematics
desireealexande
10

what is the value of y when x=9

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(2) Answers
KatriceLaigo

2/3 = 9/y cross multiply 2y = 9 * 3 2y = 27 y = 27/2 y = 13.5 or 13 1/2

monicabaugh

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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