VARIATION 1

x is inversely proportional to y. x=12 while y=50. Find y when x is 3.

Solution

x ⍺ k

      y

x = k

      y

12 = k

       50

k = 12 x 50

k = 600

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k = 600, y= ?, x = 3.

x = k

      y

3 = 600

         y

y x 3 = 600  x  y   (multiply by y on both sides)

                y

3y = 600

3      3

y = 200  .

TRY THIS…………….

x is inversely proportional to y. x=200 while y=4. Find y when x is 2.