A tangent is drawn to the graph pf y = x^3 -3x^2 + 6x -5 at its only infection point. The equation of this inflectional tangent is?
A. y = 3x -1
B. y= 3x - 4
C. y= 3x +4
D. y= -4
- TonyLv 65 years agoBest Answer
If a graph has an inflection point, the slope changes from + to - at that point. (or vice versa). As such, the slope of a tangent line at that point must be zero.
NOW, which of those answers are of the form:
y = 0x + b
or more commonly
y = b