Posted by **Brianna** on Sunday, September 18, 2011 at 11:11am.

The average rate of change of g(x) = 2x-1 from x = 2 to x = 6 is 7.5.

true or false

- college algebra -
**Anonymous**, Sunday, September 18, 2011 at 11:30am
g ( 2 ) = 2 * 2 - 1 = 4 - 1 = 3

g ( 6 ) = 2 * 6 - 1 = 12 - 1 = 11

11 - 3 = 8

6 - 2 = 4

8 / 4 = 2

False

- college algebra -
**Reiny**, Sunday, September 18, 2011 at 11:40am
No calculations are necessary.

The function is linear, so the rate of change is constant, namely its slope which is 2

so the average rate of change is 2 , not 7.5

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