"In standard form" LOL JK BE MORE SPECIFIC DUDE
The change of base formula allows you to write a logarithm in terms of logarithms with another base. It follows this pattern,

where a≠1 and b≠1
Assigning the base to be 7,

I hope I was able to answer your question. Have a good day.
Answer:
slope = - 2
Step-by-step explanation:
Parallel lines have equal slopes
Thus the slope of a line parallel to a line with slope - 2 is - 2