how to compute the best first order (linear) fits of the forms y = mx+b and y = Ce^dx?

How can I compute these forms and display the values for a,b,C, and d? My code is below.

% creates a graph with a line of best fit
rideData % contains arrays of data for climb and calories

figure(1);
plot(climb, calories, "o");
p = polyfit(climb, calories, 1);
f = polyval(p, climb);
hold on
plot(climb, f);

Answer 1

[Image Analyst]

What is a?

Did you see my answer here in this recent question

To display values, plug them into sprintf() and then use helpdlg(), msgbox(), text(), or fprintf() to display them.

Your p(1) is your m.

Your p(2) is your b.

To fit to an exponential, use fitnlm() like the attached example shows.

[Mikey Pham]

Sorry, I meant y = ax+b not y = mx+b.

[Image Analyst]

So were you able to do everything now?

Is this a graded homework assignment?

[Mikey Pham]

This is a practice problem I wanted to try out. I got it to find the values for me. Thank you.

[Obinna Ezejiofor]

you mind showing me how?

[Image Analyst]

He said "display the values for a,b,C, and d" but he never said what c and d were so I can't answer the question completely. Obinna, you might want to start your own question.