x is directly proportional to y. x=12 while y=4. Find y when x
is 60.
Solution
x ⍺ y
x = ky
12 = k x 4
12 = 4k
4 4
k = 3
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
k = 3, y= ? x = 60.
60 = 3 x y
60 = 3y
3 3
y = 20.
TRY THIS…………….
x is directly
proportional to y. x=20 while y=4. Find y when x is 70.
Variations are sometimes challenging but we can always share ideas and here it is simplified for you.
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