Determine whether y varies directly with x if so find the constant of variation k write the equation
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No, y does not vary directly with x

Step-by-step explanation:

Suppose y varies directly with x,

i.e. y ∝ x

⇒ y = kx,

Where, k is the constant of variation,

If x = 7, y = 11

⇒ 11 = 7k

⇒ k = ,

Thus, the equation that shows the relation between x and y,

If x = 8,

If x = 9,

If x = 10,

Hence, our assumption is wrong,

y does not vary directly with x,

the final price would be 29.6925

step-by-step explanation:

39.59 minus 25% equals 29.6925

5050

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