EA1 graphing projects handed in tomorrow will be marked two days late.
If the graph of a piecewise function has an open dot that does not have a closed dot above or below it, that x-value is not included in the domain.
Clues to the domain are in the "if" conditions of the rules for the pieces.
The parent absolute value function y = | x | is a V pointing down shape with the corner at the origin (0,0).
Transformations to the absolute value function:
Add or subtract something from | x | means the graph is shifted up or down.
Multiply | x | by a positive number changes the steepness of the pieces.
Multiply | x | by a negative number flips the graph so the V points up.
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