f(-2)=2.(-2)-7=-11
f(-1)=2.(-1)-7=9
f(0)=2.0-7=-7
f(1/2)=2.1/2-7=-6
f(2)=2.2-7=-3
f(-2)=-11
f(-1)=-9
f(0)=-7
f(1/2)=-6
\(\text{f(-2)=2.(-2)-7=-11}\)
\(\text{f(-1)=2.(-1)-7=9}\)
\(\text{f(0)=2.0-7=-7}\)
\(f\left(\dfrac{1}{2}\right)=2.\dfrac{1}{2}-7=-6\)
\(\text{f(2)=2.2-7=-3}\)