TMUA 2017 Paper 1 Q18 — Worked Solution

P1·Functions, Transformations & Graphs, Indices, Logarithms & Exponentials·6.5Official · 2017 · Q18

log-graphvertical-translation-as-horizontal-stretchtransformation-equivalence

The graph of

y = lo g_{10} x

is translated in the positive

y

-direction by

2

units. This translation is equivalent to a stretch of factor

k

parallel to the

x

-axis. What is the value of

k

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