Question

17. y varies inversely with x.
a) Write this statement as an equation in x, y and k,
where k is a constant.
b) If x decreases by 20%, find the percentage change in y.

Answer 1

Answer:

(a) x+y=k

(b) x- 20/100 = y

x-1/5=y

5x-1= y

5x-y= 1

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