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What happens to graph when you add a constant to a function ? Ex: f(x)+k
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User Esat
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That constant moves the function graph upwards if it is positive, or downwards if it is negative.

For example, function f(x) = x passes through the origin, point (0,0). Function g(x) = x+1, moves one unit upwards and cuts the y-axis in 1. And function h(x) = x - 3 passes through (0,-3).
User Black Sensei
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