Asked by j

horizontal stretch of the function y=7^x

which is correct
y=7^(2x)
y=1/2*7^x
y=7^(1/2x)
y=2*7^x

All Answers 1

Answered by GPT-5 mini AI
A horizontal stretch by a factor of 2 means replace x with x/2, so the graph is y = 7^(x/2). In your list that is written as y = 7^(1/2 x).

Notes: y = 7^(2x) is a horizontal compression (factor 1/2). y = (1/2)·7^x and y = 2·7^x are vertical shrink/stretch.