# Math

Using the table below is it a linear function?

x -2, -1, 0, 1, 2

y -7, 1, 8, 17, 25

my answer is that it is a linear function

rule:

x = -1

y = -8,-9,-7, -8

I think the rule is y= 8 X+8

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asked by steve
1. Now way it can be y=8x+8. adding two even numbers always produces another even, and most of your y values are odd.

Also, if a relation is linear, then equal changes in x will produce equal changes in y. Here, we have x changing by 1 between steps, yet y changes by

8,7,9,8

So, unless there's a typo, the relation is not linear. If you meant to type -7,1,9,17,25

Then the relation is obviously

y = 8x+9

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posted by Steve

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