Question

Determine o valor f(3)-f(2)/f(1/2) para f(x)=2x-7/4

Answer 1

f(x)=2x-7/4

f(3)= 2.3-7/4
f(3)= 6-7/4
f(3)= 17/4

f(2)=2.2-7/4
f(2)=4-7/4
f(2)=9/4

f(1/2)=2.1/2-7/4
f(1/2)=2/2-7/4
f(1/2)=1-7/4
f(1/2)=-3/4

f(3) -f(2)/f(1/2)

17/4 - 9/4 / -3/4
=17-9/4 /-3/4
= 8/4 /-3/4
=2 /-3/4
=2.-4/3
=-8/3