# Points of Interest (intercepts, intersections, and more!)

If you click a curve or expression, you'll see gray dots appear at interesting points including maximums, minimums, intercepts, and intersections. Click on a gray dot to open the coordinates at that point - click the point again to hide the coordinates.

You can also trace along a function by clicking and dragging along the curve.

7 out of 17 found this helpful
Have more questions? Submit a request

• Brianrudze

Good. But I would like more choice in the "points of interest."

• Petr Doležal

You can print them but you cannot see them when you export it as an image. And choice of points would be great too: you can do that with table but they will be without coordinates.

• Devi Walpola

When I copy paste the image, I need certain points to be labelled. how can I do it then?

Edited by Devi Walpola
• Anshul

I am trying to make a graph that takes 3 points and creates the circumcircle of the points, however, I am not able to get the x and y values for the circumcentre, is there any way I can plug the coordinates to create the circle without having to manually do it each time?

Here is a link to the graph https://www.desmos.com/calculator/sknjpjtgtp

Edited by Anshul
• mATT C

I found a points of interest glitch:

https://www.desmos.com/calculator/wd4wpmwa7t

• Ntrone

@mATT C; Looks pretty interesting to me. XD haha, strange that it's similar to a sin wave, but it looks like it's just a clip issue with massive numbers. Javascript has it's limits.

• Colegaynor

@Anshul: Points of interest are not necessary. It's complicated and ugly, but there is a way to get it: https://www.desmos.com/calculator/sdql5jofvd

Edited by Colegaynor
• Ezra Oppenheimer

@Anshul and @Colegaynor; On the contrary, obtaining the intercepts of two linear equations is quite simple (and clean too!). It uses the substitution method with a little mixing around. I whipped up this small graph to demonstrate:

https://www.desmos.com/calculator/qtr8xaacav

Edited by Ezra Oppenheimer
• Pegasusroe

@Anshul: circle throught 3 points (my implementation)

https://www.desmos.com/calculator/enqmcx814z