Saturday

January 31, 2015

January 31, 2015

Posted by **alyssa** on Thursday, May 19, 2011 at 10:20am.

Find an exponential function of the form f(x) = bax that has a y-intercept of 2 and passes through the point (2, 98). For example, if the equation is f(x) = 2(7)x respond by entering the answer as 2(7)^x

- algebra -
**Reiny**, Thursday, May 19, 2011 at 10:38amI think you meant:

y = b(a^x)

you have 2 points, (0,2) and (2,98) which lie on this graph

sub in (0,2)

2 = b(a^0) ---> b = 2

so y = 2(a^x), now sub in (2,98)

98 = 2(a^2)

49 = a^2

a = ± 7

so your equation is y = 2(7)^x

(strange that they would give you the actual answer as a hint or example)

**Answer this Question**

**Related Questions**

Algebra - Find an exponential function of the form f(x) = ba^x that has the ...

Math/Algebra do u know how to do slope intercept? - The following problems are ...

Advanced Algebra - Find the exponential function of the form y=ax^b whose graph ...

math - find the exponential function of the form y=ab^x whose graph passes ...

Algebra - Please help me to solve this problem. Thank you in advance for helping...

math - i have more than one question so if u no any of the answers please tell ...

Algebra2 - Write an equation for the line in point/slope form and slope/...

math - I have a few question so I will number them off. Please answer them for ...

Algebra 1 - I've tried so hard on this and I'm completely hopeless, can somebody...

Algebra.. - IHave Like 20 Of These Same problems.. Can You Help Me With These...