4 Select the correct answer from each drop-down menu.
V
A function is a relation where each input value is assigned to
one output value.
The
of a function is the set of all input values, or x-values, for which the function is defined.
The
of a function is the set of all output values, or y-values, for which the function is defined.
To write the equation y= ax + b in function notation, substitute
✓ for y.