Question

expalin how to find a slope of a line

Answer 1

y=mx+b is the equation to finding slope

Answer 2

slop =(y2-y1)/(x2-x1)

or when you have somthing like 21=3y-7x

then the slop is going to be 7x/3

⇒21+7x=3y

⇒/3⇒7+7x/3=y

the idea is that the number with x is the slop in y=