the graph of g(x)=⌊x⌋−3 is the graph of f(x)=⌊x⌋ shifted down 3 units.
g(x) = ⌊x⌋−3 = f(x) -3
when we add or subtract from the function, this is a shift up or down
since we are subtracting this is a shift down of 3
not sure if there're any answer choices of some sort,
but if the angle a and angle b are supplementary, that means when you add their measures together they must equal 180.