f(1/2) if f(x)=-5x+1 this is a function
f(1/2) if f(x)= -5x+1
This means that we just substitute 1/2 into the function and then evaluate....so we have...
-5(1/2) + 1 =
-5/2 + 1 =
-5/2 + 2/2 =
-3/2
Which equals 1 and 1/2!
