Horizontal Line Test.

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Presentation transcript:

Horizontal Line Test

(Press the Graph to move the red lines) Horizontal Line Test If a horizontal line intersects a curve more than once, the inverse is not a function. (Press the Graph to move the red lines) Use the horizontal line test to decide which graphs have an inverse that is a function.

(Press the Graph to move the red lines) Horizontal Line Test If a horizontal line intersects a curve more than once, the inverse is not a function. (Press the Graph to move the red lines) Use the horizontal line test to decide which graphs have an inverse that is a function.