# Trendline.Type (PowerPoint)

Returns or sets the trendline type.

Possible Values are**xlExponential**- Uses an equation to calculate the least squares fit through points (for example, y=ab^x) ,

**xlLinear**- Uses the linear equation y = mx + b to calculate the least squares fit through points,

**xlLogarithmic**- Uses the equation y = c ln x + b to calculate the least squares fit through points,

**xlMovingAvg**- Uses a sequence of averages computed from parts of the data series. The number of points equals the total number of points in the series minus the number specified for the period,

**xlPolynomial**- Uses an equation to calculate the least squares fit through points (for example, y = ax^6 + bx^5 + cx^4 + dx^3 + ex^2 + fx + g),

**xlPower**- Uses an equation to calculate the least squares fit through points (for example, y = ax^b).

```
ActivePresentation.Slides(1).Shapes(1).Chart.FullSeriesCollection(1).Trendlines(1).Type = xlExponential
```