write a rule for linear function in the table
a.f(x) 1/2x +1
b.f(x)=x+5
c.f(x)=-2x-1
d.f(x)=2x+1

d. f(x)=2x+1
f(5)=2(2)+1
f(5)=4+1
f(5)=5
f(11)=2(5)+1
f(11)=10+1
f(11)=11
f(8)=2(8)+1
f(8)=16+1
f(8)=17
f(23)=2(11)+1
f(23)=22+1
f(23)=23