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09-11-2017
Mathematics

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What is the linear function for points 4,19 and 9,24

Respuesta :

09-11-2017

if you insert both points into y=mx+b you receive
I:19=4m+b
II:24=9m+b
subtraction of I from II to eliminate b:
5=5m
m=1

insert this in I again:

19=4m+b
19=4+b
15=b

-> y=x+15

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