For all trendline types except moving average, sets or returns the point on the value axis where the trendline should intercept.

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 public double Intercept{ get; set; }
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<p>Public Property Intercept() As Double</p>

If an intercept is not being used, this property will return Double.NaN. After setting this value, Trendline.UseIntercept will return true. To stop using an intercept value, use Trendline.ClearIntercept().