does one go about finding the slope of y=20-4*sqrt(x) when x=4 and y=11
From what I can tell y should = 12 when x =4
that aside, when I do the rate of change algebra f(x+h)-f(x)/h
I get
[-4(sqrt(x+h)-sqrt(x))]/h
am I on the wrong track?
does one go about finding the slope of y=20-4*sqrt(x) when x=4 and y=11
From what I can tell y should = 12 when x =4
that aside, when I do the rate of change algebra f(x+h)-f(x)/h
I get
[-4(sqrt(x+h)-sqrt(x))]/h
am I on the wrong track?