Definition:
- A function takes in an "input" and creates an "output".
- Your inputs are called the independent variables.
- Your outputs are called the dependent variables.
- Generally, your x values are the inputs.
- Generally, your y values are the outputs.
y = 2x + 3
- We usually put in values for x, which is our input/independent variable.
- y is dependent because the value of y depends on what x is.
f(x) = -4x - 4
- Sometimes you'll see this notation. f(x) is just a name for y.
- f(x) is the function called f.
- f(x) as a whole is the dependent variable.
- What's INside the parentheses of the function is your INput.
- So x is your input. It is your independent variable.
v(t) = 8t
- Sometimes math uses different letters to fit the problem.
- v could represent velocity
- t could represent time
- t is INside the parentheses. What does this imply t to be?
- What is v(t) implied to be?
