Tuesday
July 29, 2014

Homework Help: Algebra

Posted by Nicole on Friday, March 5, 2010 at 2:50pm.

For which table(s) of values in Exercises 3942 is the relationship
linear? Tell how you decided. Write the equation for each linear
relationship.

x y

5 20
10 30
15 40
20 50
25 50
30 50

bobpursley stated "Look at y. It stays constant at the end. If it were always constant, it would be linear...a horizontal line with zero slope. But near the origin, it is not constant.
The relation is not linear."

My question then is: "So, no part of the table is linear? I mean, the x=5, y=20; x=10, y=30; & x=15, y=40, none of those are linear either? Or would the x=20, y=50; x=25, y=50; & x=30, y=50 be linear? Or is it because of the constant at the end that none of it is linear?"

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