Warm Up Solve each equation for y. 1.x = -4y 2.x = 2y + 3 3.x = (y + 3)/3 4.x = -1/3 (y + 1)

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Presentation transcript:

Warm Up Solve each equation for y. 1.x = -4y 2.x = 2y x = (y + 3)/3 4.x = -1/3 (y + 1)

Inverse of a Relation The inverse of a relation consisting of the ordered pairs (x,y) is the set of all ordered pairs (y,x). The domain of the inverse is the range of the original relation. The range of the inverse is the domain of the original relation.

Finding the inverse To find the inverse of a function you must replace the independent and dependent variable. Find an equation for the invers of y = 3x -2

Horizontal Line Test The inverse of a function is a function if and only if every horizontal line intersects the graph of the given function at no more than one point.