SOLUTION: hi i need help with the following
Given f(x)=ax^2+b and f(2)=5, f(3)=20, find a and b
any help you can provide will be great
Algebra.Com
Question 982450: hi i need help with the following
Given f(x)=ax^2+b and f(2)=5, f(3)=20, find a and b
any help you can provide will be great
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
First focus on f(2) = 5
Plug in x = 2
Replace f(2) with 5
-------------------------------------------------------
Now move onto f(3) = 20
Replace every x with 3
Replace f(3) with 20
Replace b with 5-4a
I'll let you finish up. The goal is to isolate 'a'. Once you know the value of 'a', you plug it into to find the value of 'b'.
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