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March 6, 2015

March 6, 2015

Posted by **He's not all bad like his reputation </3** on Thursday, February 2, 2012 at 6:54pm.

Provide an explanation, steps on how you figured the answer out, and of course, the answer.

Tell whether the table represents an exponential function. If so, write a rule for the function.

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

y: 25, 5, 1, 1/5, 1/25

- Algebra; HELP PLEASE. -
**Damon**, Thursday, February 2, 2012 at 7:17pmwell, let's see if y = a^x

if x = 2, y = 1/25

so

1/25 = a^2

1/5 = a

so try

y = (1/5)^x

test x = -2

y = (1/5)^-2

y = (1)/(1/5)^2 = 1/(1/25) = 25

that sure is promising

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