SOLUTION: My book does not go into much help with this problem: If y = f(x)=5x+1 find each value and my book gives me f(2/5) Not much further instruction on this one. Any help would really

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: My book does not go into much help with this problem: If y = f(x)=5x+1 find each value and my book gives me f(2/5) Not much further instruction on this one. Any help would really       Log On


   

Question 34020This question is from textbook Beginning and Intermediate Algebra
: My book does not go into much help with this problem:
If y = f(x)=5x+1 find each value and my book gives me f(2/5) Not much further instruction on this one. Any help would really be appreciated.
Thank you, Liz This question is from textbook Beginning and Intermediate Algebra

Answer by lyra(94) About Me  (Show Source):
You can put this solution on YOUR website!
Dear Liz,
When you say "find each value and my book gives me f%282%2F5%29" do you mean that you want to find what f%28x%29=5x%2B1 is when x=2%2F5? Then your answer is
5+%2Ax+%2B1
Replace x with 2/5
It becomes 5%2A%282%2F5%29+%2B1.
%285%2A2%29%2F5+%2B1
10%2F5+%2B1
2%2B1=3
Thus, your answer is 3
Smiles,
lyra