# Homework Help: Calculate x-intercept for f(x)

1. Feb 23, 2012

### rollcast

1. The problem statement, all variables and given/known data
f(x) =0.02605x-0.01908

Calculate the x axis intercept for the function above.

2. Relevant equations
f(x) =0.02605x-0.01908

3. The attempt at a solution

0 = 0.02605x - 0.01908
0.02605x = 0.01908
x = 0.732 (3 s.f.)

2. Feb 23, 2012

### Staff: Mentor

What's your question?

3. Feb 23, 2012

### Staff: Mentor

looks right, I got 0.7324 to 4 sig figures

Just check it by plugging in it into thee original eqn to verify that f(x) is zero.

4. Feb 23, 2012

### rollcast

I'm trying to calculate the x - intercept of the line, f(x) =0.02605x-0.01908.

5. Feb 23, 2012

### Staff: Mentor

I can see that you did that, but what is your question?

6. Feb 23, 2012

### rollcast

I wanted to see if my result was correct as I'm not familiar with the f(x) = ... notation.

7. Feb 23, 2012

### Staff: Mentor

f(0.7324) won't work out to be exactly zero, because of the rounding.

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