Reference 'Equation of Trend Line' Values

Hi all,

I am trying to find out if there is a way to reference the calculated intercept and gradient of a line from a linear trend line created from my data.

For example my line equation maybe:
y = 169341x+27.34

Thus I would like to be able to reference the gradient (169341) and the intercept (27.34) into cells in my spreadsheet. This will allow the ability to modify the graph data and automatically update any formula that I use referring to the intercept and the gradient.

Any help on the above would be gratefully appreciated as always!

Cheers,
Mark