Question

Seja a função f(x)=
$\frac{3}{4} x - 2$

Determine:

a) f(-4)​

Answer 1

$f(x)=\dfrac{3}{4}x-2\\\\f(-4)=\dfrac{3}{4}\cdot(-4)-2\\\\f(-4)=\dfrac{3\cdot(-4)}{4}-2\\\\f(-4)=-3-2\\\\f(-4)=-5$