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# Plotting (Post Script Series) (X series)

I am the three-dimensional problem represented by the two-dimensional graph. The derivative tells the story of how a function changes as its input changes. The function is why is the narrator. The first derivative of gives velocity, the second acceleration, the third jerk, the fourth jounce.

The derivative of the function at a particular point is equal to the slope of the tangent line. You only need two points to plot a straight line. Now, how to determine the equation of the line? (y = mx + b) B is the y-intercept; the point where the line crosses vertical axis. M is the slope, rise over run. Slippery slope? Slippery brain? Slippery brains fall easily in love. B told me I had a sexy brain. That is the best compliment to a neurobiologist.

Begin with B robing me in terrycloth and brewing fresh coffee. We sat in his air-conditioned garage while he smoked an American Spirit. Inside, B simply handed me a toothbrush. It was shiny and new and he gave me a travel case too. I keep it on my bookshelf.

X gave me a toothbrush last night. He instructed me to leave it on the nightstand on my side of the bed. The plastic and cardboard packaging was misshapen. I teased X about who used the toothbrush. The bristles felt too soft. His brussels sprouts are perfectly soft. X’s been rehearsing this for days, I know. I was sad.

What lies between B and X?

This is only one tangent; there are infinitely many more…

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