How do you find the function values f(-1/2) given f(x) = -4x?

Jul 10, 2016

+2

Explanation:

The expression $f \left(x\right)$ basically means "this is what you do with $x$"

So if you have $f \left(- \frac{1}{2}\right)$ it is stating that what you did with $x$ you now do the same thing with $- \frac{1}{2}$

So if $f \left(x\right) = - 4 x$

Then $f \left(- \frac{1}{2}\right) = - 4 \left(- \frac{1}{2}\right) = + 2$