# Plotting one point over another and getting that point to appear filled in **URL:** \ **Category:** Questions\ **Created:** [November 3, 2020, 9:02pm UTC](https://cl.desmos.com/t/plotting-one-point-over-another-and-getting-that-point-to-appear-filled-in/1854 "2020-11-03T21:02:06Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Kevin\_Peters](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/kevin_peters/32/1045_2.png) [@Kevin\_Peters](https://cl.desmos.com/u/Kevin_Peters)\ **Post date:** [November 3, 2020, 9:02pm UTC](https://cl.desmos.com/t/plotting-one-point-over-another-and-getting-that-point-to-appear-filled-in/1854/1 "2020-11-03T21:02:06Z")
Suppose a student plots a set of points with hollow circles and then I want one of those circles (-1,-16) to become filled in when the student plots that point again. Is there anyway to do that? Its in slide #2 in the activity linked below, but the points need to be plotted on the slide #1 for there to be an issue. > **[Remainder Theorem • Activity Builder by Desmos](https://teacher.desmos.com/activitybuilder/custom/5f7f91716c3344361f4c18d0)** > > Let's explore the relationships between polynomial division and polynomial graphs. ---
**Author:** ![Daniel\_Grubbs](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/daniel_grubbs/32/719_2.png) [@Daniel\_Grubbs](https://cl.desmos.com/u/Daniel_Grubbs)\ **Post date:** [November 3, 2020, 9:42pm UTC](https://cl.desmos.com/t/plotting-one-point-over-another-and-getting-that-point-to-appear-filled-in/1854/2 "2020-11-03T21:42:47Z")
Where are they plotting it “again”? Also, I think you meant “ordered pair” not “coordinate” in your Slide 2 question. That or plural “coordinates”. ---
**Author:** ![Kevin\_Peters](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/kevin_peters/32/1045_2.png) [@Kevin\_Peters](https://cl.desmos.com/u/Kevin_Peters)\ **Post date:** [November 3, 2020, 9:50pm UTC](https://cl.desmos.com/t/plotting-one-point-over-another-and-getting-that-point-to-appear-filled-in/1854/3 "2020-11-03T21:50:47Z")
Yes, I mean an ordered pair. They plot points on a table on slide one (with hollow circles) on slide #1 and the points carry over to slide #2, but on slide #2 after they draw on the sketch, a box appear that I want them to enter the ordered pair (-1,-16), but since this point is already plotted nothing changes on the graph. I changed the code a bit so it would plot if the point is (-1,-15) because nothing is plotted there, but not (-1,-16) because the point is already plotted from the previous slide. > **[Remainder Theorem • Activity Builder by Desmos](https://teacher.desmos.com/activitybuilder/custom/5f7f91716c3344361f4c18d0)** > > Let's explore the relationships between polynomial division and polynomial graphs. ---
**Author:** ![Daniel\_Grubbs](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/daniel_grubbs/32/719_2.png) [@Daniel\_Grubbs](https://cl.desmos.com/u/Daniel_Grubbs)\ **Post date:** [November 3, 2020, 11:25pm UTC](https://cl.desmos.com/t/plotting-one-point-over-another-and-getting-that-point-to-appear-filled-in/1854/4 "2020-11-03T23:25:23Z")
You could use a button for entering the ordered pairs. Use `capture` to get the x and y coordinates, and set `numberList`s, X and Y, in the graph on Slide #1 to the histories for the captures. Plot (X,Y) and set to closed dots. ---
**Author:** ![Kevin\_Peters](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/kevin_peters/32/1045_2.png) [@Kevin\_Peters](https://cl.desmos.com/u/Kevin_Peters)\ **Post date:** [November 4, 2020, 2:11am UTC](https://cl.desmos.com/t/plotting-one-point-over-another-and-getting-that-point-to-appear-filled-in/1854/5 "2020-11-04T02:11:51Z")
Thanks so much. I actually decided to plot a circle which is only a little bigger than a point to get the effect I want, but your advice has helped me make some really wonderful activities.