How do you plot a coordinate pair that was entered directly into a table?

Questions
1

I want to be able to plot the vertex entered by the student.

This hasn’t worked:

vertex_string = table1.cellContent(1,1) ##I have also tried (1,2), (2,1), (2,2) in case I’m referencing the wrong
cell number
point = parseOrderedPair(vertex_string)

number(“x_{1}”):numericValue(point.x)
number(“y_{1}”):numericValue(point.y)

Thanks!

45%20PM

2

Hey Jose,

First of all, the code looks great, everything is mostly where is should be! There are a couple of things that could be going wrong, small stuff that could be the difference:

  1. Tables are referenced as (row,column) so your empty cells now are (1,2) (2,2) and (3,2).
  2. After you’ve created numeric values for x_1 and y_1 you need to tell the calculator to plot them as a coordinate point. Go into the calculator and type in (x_1,y_1)
    03%20AM
    Screen Shot 2018-08-24 at 4.50.03 AM.png728×232 12 KB

I made you a working copy. Good luck!

3

Hi Jay! I am trying to copy the code from this post and am failing miserably! I am creating an exploration for standard and factored forms of a quadratic and how each form reveals an intercept…so I want the points for the intercept to populate to the graph when the students writes them in the table so that it is naturally checking. However, I can’t get the ordered pairs to populate to the graph. I appreciate any help you can offer!

OR…see the attached screenshot. Is there anyway that after a student select the intercepts on the graph they can stay up even when the student is writing in another component on the screen?

Screen Shot 2021-04-28 at 11.24.17 AM
Screen Shot 2021-04-28 at 11.24.17 AM1020×601 42.6 KB

4

Add this to the first line in your graph CL (or change the name of your table from “table1” to “table”):

table=table1

Currently, the CL is trying to find a component named “table”, but your table is named “table1”.

5

I am trying to copy the code from this post and am failing miserably!

Not at all!! Two really small things:

  1. You can’t put the dash for x-intercept in a variable name, We usually use camel caps xIntercept, but just deleting it works.
  2. Daniel mentioned it, your table is named table1 not “table”

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