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