Examlex
Explain why differences exist in skin pigmentation among human populations around the world.
Horizontal Shift
A movement of a graph in the left or right direction along the horizontal axis.
Vertical Shift
A transformation that moves a graph up or down the y-axis, changing the equation's output but not its input.
Vertical Line Test
A method to determine if a graph represents a function by checking if any vertical line intersects the graph at more than one point.
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