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if y varies directly as x, and y=9 when x=8 , find y whenx=16

Apr 1st, 2015

if y varies directly as x, and y=9 when x=8 , find y when x=16

Answer:

Step 1:           When y = 9    x is  = 8

step 2:           When x  = 16 (it doubles its value ie., 8x2 = 16)  Then y also doubles

Therefore y = 9  X  2  =  18                     Final Answer:  y = 18

Apr 1st, 2015

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