Find the Largest Open Interval Where the Function Is Changing $y=7 x-5$

Multiple Choice

Find the largest open interval where the function is changing as requested.
-Increasing $y=7 x-5$

A) $(-\infty, 7)$
B) $(-5,7)$
C) $(-\infty, \infty)$
D) $(-5, \infty)$