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Official Specimen Paper 1 · Q14

Paper 1Functions & graphsPowers & logarithms

aa, bb, xx, and yy are real and positive.

aa and bb are constants.

xx and yy are related.

A graph of log⁡y\log y against log⁡x\log x is drawn.

For which one of the following relationships will this graph be a straight line?

Ayb=axy^b=a^x
By=abxy=ab^x
Cy2=a+xby^2=a+x^b
Dy=axby=ax^b
Eyx=aby^x=a^b

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