Question 1170988


{{{f(x)=abs(x)}}}

recall:

{{{f(x)=a*abs(x)}}}

{{{a}}} is {{{vertical}}} stretch/compression

{{{abs(a)> 1}}} -> stretches
{{{abs(a)< 1}}} -> compresses
{{{a < 0}}} flips the graph upside down

So, we must find the new equation of the vertical stretch of a factor of {{{4}}} such that the new equation yields, 

{{{f(x) = 4abs(x )}}}