Could someone answer this for me? i didn't understand it. no guessing! make sure your answer is explained! make sure it is right

I would put time on the x axis, and height on the y axis - the height is the thing you're measuring so it's the dependent variable, which always goes on the y axis :)

Errors are that the graph does not start and end with zero. Since it's a rollercoaster it was at rest before they rode it, and so the time must start from 0 seconds, not 2 seconds. It must also come to a stop at 0 seconds, not 2 seconds.

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Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm