What is the slope of a line when the equation of the line is

a) [[$ y = 2x $]] The slope is .

b) [[$ y = 6x + 3 $]] The slope is .

c) [[$ y = \: –3x \:–2 $]] The slope is .

d) [[$ y = x + 100 $]] The slope is .

e) [[$ y = \:–x $]] The slope is .

f) y = 7 The slope is .