3. Function Notation
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-13, -5, and 1
x= -4
a(- b)=- a * b
Subtract term
x | 2x-5 | f(x) |
---|---|---|
-4 | 2( -4)-5 | -13 |
0 | 2( 0)-5 | -5 |
3 | 2( 3)-5 | 1 |
y is a function of xor that
y depends on x.y = f(x) This way of representing the dependent variable is called function notation. A function can be represented using a table, a mapping diagram, an equation, or a graph.
Determining Whether a Relation Is a Function | |
---|---|
If represented as | Use |
A set of coordinates or a table of values | A mapping diagram |
A graph in the coordinate plane | The Vertical Line Test |