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# How to calculate gradient of a line on a graph when the Y-axis goes up in 0.04 watch

1. Hi,

Sorry if this is a silly question but my brain has gone to mush. How would you calculate the gradient of a line on a graph if the Y-axis goes up in 0.04 and the X-axis goes up in 15.

E.g.

Y increases from 0.12 to 0.16 and the X increases from 30 to 46.5.

Or would it be: 4/16.5?

Thank you for any help
2. (Original post by CTLevers)
Hi,

Sorry if this is a silly question but my brain has gone to mush. How would you calculate the gradient of a line on a graph if the Y-axis goes up in 0.04 and the X-axis goes up in 15.

E.g.

Y increases from 0.12 to 0.16 and the X increases from 30 to 46.5.

Or would it be: 4/16.5?

Thank you for any help
Try using the formula:

y2-y1/x2 -x1

that is the second y coordinate subtract the first btw (and same principle for x coordinates)

edit: yes, you're right
3. (Original post by CTLevers)
the X-axis goes up in 15 ... X increases from 30 to 46.5.
Two conflicting statements.

Besides, you need to have two distinct points on the graph to specify the gradient between them.
4. (Original post by RDKGames)
Two conflicting statements.

Besides, you need to have two distinct points on the graph to specify the gradient between them.
Sorry I'm being unclear.

The "main" squares of the graph go:

Y= 0.04 and X=15

but the "main" squares can be sub-divided into 10 smaller squares which go up:

Y= 0.004 and X=1.5

Hopefully this makes more sense?

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