Units 1-7 Flashcards by Georgie Howard

Q

Equation for nth term of a sequence

A

Un= a+ (n-1)d

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Q

Equation for sum of sequence

A

Sn= n/2 [2a+(n-1)d]

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Q

Perpendicular lines

A

Negative reciprocal of the gradient.

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Q

How to find the gradient

A

rise/run

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