This week in math 10 I learned how to show a function with function notation, mapping notation. To first start turning a simple equation into a function notation You write f: x as Y or in words F of x  so for example we see the function y=3x+2 in function notation we write as f(x)= 3x+2. To write a mapping notation we go from what we learned previously and change the “=” into an Arrow “->” which is shown as  f(x)->3x+2 You use mapping notation when there are a multiple amount of relation between input and output variables. Also another good way to use function notation would be to switch the F into other letters so that we can tell the difference. Another way of using function notion is in equation between different functions and showing the input an example of this is in the equation f(2)+f(8)-f(2)=8+26-8=26.