Algebra 2

4 marks · Normal

Given that is inversely proportional to .

(a)

If when , write a formula for in terms of .

[2 marks]

(b)

Calculate the value of when .

[1 mark]

(c)

Find the value of when .

[1 mark]

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(a) y = 36 / x

(b) 6

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Marking points

M1 (a) · 1 mark · Recognises and substitutes to find .

A1 (a) · 1 mark · States or equivalent. (follow-through)

B1 (b) · 1 mark · Correct value when : . (follow-through)

B2 (c) · 1 mark · Correct value when : . (follow-through)

Worked solution

a) .

When .

b) When .

c) When .