The variable a represents whether the graph opens up or down.
The h moves the graph to the left or right.
The k moves the graph up or down.
Examples:
When you have the equations:
- y = |x + h| the graph will move h units to the left.
- y = |x - h| the graph will move h units to the right.
- y = |x| + k the graph will move up k units.
- y = |x| - k the graph will move down k units.
If your equation happens to have a negative sign in front of the absolute value, the graph will be flipped or reflected over the x-axis
Make sure you get a good idea of y=|x + 2|...(these symbols are just above the ENTER key on most keyboard)on your calculator it is ABS...if you see that key in y = abs(x +2) you will notice it moves the vertex two units left!
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