f(x)=3x+4
"f of x equals 3x+4"
We know this is a function based on the notation.**The mathematician is telling you that they are functions.
f(x)=3x+4
g(x)=2x+5
The g means that they are both functions.
f(2) What do you think this means?
This means that x is equal to 2.
f(x)= 3x+4
f(2)=?
Same as y=3x+4; x=2
y=3(2)+4=10
