An inflection point is not a saddle point, but a saddle point is an inflection point.
To be precise, a saddle point is both a stationary point and an inflection point. An inflection point is a point at which the curvature changes sign, so it is not necessary to be a stationary point.
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The distance between the middle and the inflection point is the standard deviation.
(a) y = -3x + 1
two at x = -2 and x = -1
Traveling at 60 miles per hour how long would it take to travel from point C to point D?
There is no specific name for lines that meet at one point, but lines that meet at a point, the point is called the intersection point.