Answer
a) $f(x)=|x|$
b) Horizontal shrink
c) See graph
d) $g(x)=f(2x)$
Work Step by Step
We are given the function:
$g(x)=|2x|$
a) The parent function is:
$f(x)=|x|$
b) Horizontally shrink $f(x)$ to get $g(x)=|2x|$.
c) Graph the transformation.
d) Use function notation to write $g$ in terms of $f$:
$g(x)=f(2x)$