How to determine if the trendline is going up or down

I have a dataset in sheet Data ("A1:B1000"). In column A a Date and in column B an integer. Further more a PivotTable in sheet PT and a chart with a lineair trendline in sheet Dashboard. I am able to get the formula from the trendline which looks like this: y = 4,1793x + 101,42R² = 0,5576

What I would like to know is, if and how I can determine wether the trendline is going up or down. I have been doing some research here and found this one f.i.: How can I get constant from formula at Excel VBA?

Any guidance how to approach this is highly appreciated.

1 Answer

Speaking about a linear trendline: A positive slope means the trendline is going up, a negative slope means trendline is going down.

So in a linear equation y = m⋅x + c the m is the slope.

So in y = 4,1793x + 101,42 the m is 4,1793 it is positive so it is going up.

The formula Slope() should give you the same result 4,1793 if you use it on the same data as your chart. So you just check if the result of the slope formula is positive or negative.