x is directly proportional
to y. x=32 while y=4. Find y when x is 736.
Solution
x ⍺ y
x = ky
32 = k x 4
32 = 4k
[dividing by 4 both sides]
4 4
k = 8
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
k = 8, y= ? x = 736.
x = ky
736 = 8 x y
736 = 8y
8 8
y = 92.
TRY THIS…………….
x is directly proportional
to y. x=40 while y=4. Find y when x is 380.
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