This week in math we learned how to write function notation. There are 3 different types, equation, mapping, and function notation.
1: equation
5x+4
You can input any number in this equation and there will be no overlapping outputs. This is the t-chart for the equation that can then be charted on a plane
| x | y |
| -3 | -11 |
| -2 | -6 |
| -1 | -1 |
| 0 | 4 |
| 1 | 9 |
| 2 | 14 |
| 3 | 19 |
2: mapping
This is the same equation but in map notation: f:(x)→5x+4
The f at the start is the name of the function (eg: g,h,k). the arrow means happed onto. So if I where to use function f to solve if x=3, it would look like this:
f:(3)→5(3)+4
f:(3)→15+4
f:(3)→19
3: function
This is what the same equation would look like in function notation: f(x)=5x+4
The function still has a name(f) and the equal sign(=) is mapped onto.
This is what it looks like to solve if x=3:
f(3)=5(3)+4
f(3)=15+4
f(3)=19