Need help on how to do the following: Below is the current shell of code I have. It makes an equation. What I want is for students to have to use the graph layer next to the note and drag a line on the graph to match the equation. How can I best do that? r=randomGenerator() m=numericValue("(-1)^$…

Here’s my solution. I evaluated the difference of each function using a list of x values (function f-h, f-k, g-h, and g-k). I put everything in the Alternate Correction folder. [image] [Copy of] Slide 35 Graphing Pair of Lines • Activity Builder by Desmos by Daniel Grubbs …

That is exactly what I needed! Thank you!

Got a follow up if you have the time. I tried to expand upon this and make two lines but I am hitting a wall. Do you see what I am doing wrong? It is slide 35 on this link [image] EXAMPLE PROBLEMS - (Linear Functions) • Activity Builder by Desmos by Micah Baldree …

Simple oversight. In your functions (f(x) and g(x)), you put x_a and x_b where it should just be x.

I am actually still having an error. Sometimes when I match one of the lines it will just say correct. Do you see where this may be coming from? I tried to set it up where either line could be placed where the given equation are. Do I need to somehow just set the top one for the purple line and the …

Played with it more on a duplicate slide (slide 36). I made it where the lines are specific to each equations. Red goes with the second one and purple with the top one. I also found that the c value shows up as 1 when the lines match in all cases except for the when the b is 0. Then it shows up as a…

That’s perfect! Thanks so much!

It is reading both of these as correct, which is that initial problem I had as well. Any idea on this, or is it just one of those things you give them a warning about and just keep moving forwards? [image] [image] [image] Here is where it sees the error [image] Would a way to resolve this be…

You’re using your old checks. If in your note you use: correct=graph.number(`C_{orrect}`)=0 co= when correct "Correct... You won’t need the colors, and I think it should work fine.

Dragging a line to fit an equation

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Daniel_Grubbs November 16, 2020, 5:12pm 2

I’d use two points (myself I’d use sliders with a unit or half unit Step) that form a line. Then, check that slope and intercept are within desired tolerance.

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Dragging a line to fit an equation

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