Given f(x) =2x+6/ 4x+8 and m(x) = -1/2(x+2)a) At what ordered pair is the tangent line horizontal? (clue: a horizontal line has a slope of

Given f(x) =2x+6/ 4x+8 and m(x) = -1/2(x+2)²a) At what ordered pair is the tangent line horizontal? (clue: a horizontal line has a slope of zero)b) At what ordered pairs does the normal line have a slope of 32 ?c) What is the slope of the normal line when y=0?