IGCSE PHY ATP Drawing Graphs

Can you please tell me how I can easily decide the scale of the graph? I spend way too much time figuring out the scale so I don't have much time left for the other questions.
Are there any tips and tricks that can help me out?

Reply 1

Maleesha.F

say that the first bold square is a 0 and the second bold is a 5. count the number of tiny squares in between and do 5/number of tiny squares to find what one tiny square represents. If the first is 4 and the second is 8, then it's [(8-4)/number of tiny squares in between]

(edited 11 months ago)

Reply 2

S0303

Original post by Maleesha.F

Hi,

Thank you for your reply. This is the way to find what value each tiny square represents, right?
I'm actually looking for a way to decide which scale I should take for the two axis when I have two columns of data. I know I am supposed to plot the graph in such a way that it fills at least half of the graph paper. So sometimes, it is hard to decide which scale to take in order to get the correct graph.

Reply 3

Maleesha.F

Original post by S0303

Hi,
Thank you for your reply. This is the way to find what value each tiny square represents, right?
I'm actually looking for a way to decide which scale I should take for the two axis when I have two columns of data. I know I am supposed to plot the graph in such a way that it fills at least half of the graph paper. So sometimes, it is hard to decide which scale to take in order to get the correct graph.

oh alright, then take a look at the range of values you have for both the x and y axis, so do the highest value - lowest value. then it's a bit easier to figure out where your axis must start from. You can use a break-up of scale as well (just double check before going in to an exam, especially for physics)

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