If you write geometric sequences on a graph, they form lines...

Let us call the geometric term "x"

Let us call the value of the geometric term "y"

Now let's find the slope of that line...

The slope equation is:

Substitute:

Subtract:

Divide: (this is a very steep line)

All lines can be written in the form:

Substitute:

Multiply:

Subtract:

Go back to equation:

Substitute:

Substitute to find the first term:

Multiply:

Subtract:

but please, CHECK MY ARITHMETIC!!!!!!!!!!!!