Straight Line Curve Fit Using MATLAB

Step 1 Put the x values into a vector, x, and the y values into a vector, y. Then issue the command 

Step 2 Next evaluate the polynomial at a set of points from x = 100 to 700 for plotting purposes. Because the polynomial is a straight line, only two points are needed  

Finally, plot the data and the straight line use red symbols for the data and a blue line for the straight line  

The result is shown in Figiue E.2. (The figure here appears in black, obtained by changing ro to ko and b- to k-. ) 

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