Posted by **Stacy** on Friday, May 18, 2007 at 9:28pm.

Plug in (-1) for x. It will look like this:

f(-1) = 4 *(-1) - 3

four times negative 1 equals negative 4, so...

f(-1) = -4 - 3.

negative four minus three is easiest to figure out with a number line...it equals negative seven. So:

f(-1) = -7. And you're done!

here is another one i have no idea how to do. if f(x)=4x-3 how do I find f(-1)

4(-1) - 3

four times negative 1 is negative 4.

So what's

-4-3

?

Matt

## Answer This Question

## Related Questions

- Pre-Algebra - If negative 20 equals 168, negative 15 equals 153, negative 10 ...
- MATH - WHAT IS THE TENTH DIDGIT IN THE QUOTIENT 120 / 11? A. 0 B. 1 C. 8 D.9 I ...
- algebra - 4-3/4b^5c^3 / -4/6b^2c^-3 = four minus three fourths b to the 5th ...
- algebra - 4-3/4b^5c^3 / -4/6b^2c^-3 = four minus three fourths b to the 5th ...
- algebra - negative five divided by negative three minus two times negative one ...
- math - Solve negative five-ninths equals negative two v minus one-third for v. ...
- algebra - find the minimum value of f(x,y) equals x minus 4y for the feasible ...
- Algebra -- Mrs Sue can you help - can youcheck these write a 2 step equation: ...
- algebra word problem - can youcheck these write a 2 step equation: half a ...
- math - dentify the line that contains the error in this solution and correct the...

More Related Questions