What is the value of my in 7=1/4m?​

15 points ! ~ see if you know the answer to both you!

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Atriangle has verticals at b(-3,0), c(2,-1), d(-1,2). which transformation would produce an image with verticals b”(-2,1), c”(3,2), d”(0,-1)?