Number of apples (x)
1, 4, _, 12, _
cost of apples (y)
8, 32, 56, _, 160
chapter name is variation 8 std
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Step-by-step explanation:
It is given that the cost of apples (y) and number of apples (x) are in direct variation.
..y xx⇒ y
kx
where k is constant of variation
When x = 1, y = 8.
.. 8 = kx 1
⇒k=8
So, the equation of variation is
y = 8x
When y = 56,
56 = 8x
⇒x=7
When x = 12,
y = 8 x 12 = 96
When y = 160,
160 = 8x
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