Posted by Angie on Wednesday, March 25, 2009 at 8:36pm.
Is the relationship between y and x linear?
x y
0 2
4 5
8 8
12 11
i don't think it's linear.

Math  Count Iblis, Wednesday, March 25, 2009 at 8:39pm
Why not?

Math  Angie, Wednesday, March 25, 2009 at 9:02pm
because i can't write an equation for y.

Math  Count Iblis, Wednesday, March 25, 2009 at 9:29pm
If you assume that Y is linear, then you can write down an equation. Then you take the first two points to completely fix the undetermined constants in that equation.
Then you have arrived at the following conclusion:
Assuming that the relation is linear, y is given in terms of x as follows...
Then you check if the other points are consistent with this equation. If the relation is linear, they must be consistent with that equation. So, if it is not, then the relation cannot be linear.

Math  Angie, Thursday, March 26, 2009 at 5:55pm
I don't think y is linear. If it is, what's the equation? y=.....
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