Question

alguem me ajuda e urgenteee

Answer 1

f(x)=-6x+12

f(1/2)= -6.(1/2)+12

f(1/2)= -6/2+12

f(1/2)= -3+12

f(1/2)= +9


f(1/4)= 6.(1/4)+12

f(1/4)= 6/4+12

f(1/4)= 3/2+12

f(1/4)= 3+24/2

f(1/4)= 27/2


f(-2)= 6.(-2)+12

f(-2)= -12+12

f(-2)= 0

f(-2)-f(1/2) / f(1/4)=

0 - (+9) / 27/2=

-9÷ 27/2=

-9 × 2/27=

-18/27=

-6/9=

-2/3.