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# Will I get marked down for using a different method? EDEXCEL FP1

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Why bother with a post grad? Are they even worth it? Have your say! 26-10-2016
1. For linear interpolation, can you find the equation of the line, after using the two x values you are give to find the corresponding y values with the equation you are given, and find where it intersects the x axis (by replacing y with 0) for the first approximation, instead off using similar triangles, which I find harder?

Thanks in advance, this is for my FP1 paper tomorrow.
2. (Original post by Someonerino)
For linear interpolation, can you find the equation of the line, after using the two x values you are give to find the corresponding y values with the equation you are given, and find where it intersects the x axis (by replacing y with 0) for the first approximation, instead off using similar triangles, which I find harder?

Thanks in advance, this is for my FP1 paper tomorrow.
Yeah, sounds fine.

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