What is the effect on the graph of the function f(x) = 2x when f(x) is replaced with f(2/3x)? a)vertical stretchingb)vertical compressionc)horizontal compressiond)horizontal stretching

f(x) = A(Bx+C)+D

any changes to A or B are vertical compressions
if you change the A from 2 to 4/3, the number is smaller than before

the smaller the A, the wider the graph, the larger the A, the more compressed the graph