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What is the initial value of the function represented by this graph?

A coordinate grid is shown with x and y axes labeled from 0 to 7 at increments of 1. A straight line joins the ordered pair 0, 1 with the ordered pair 6, 7. (this describes the attachment if you can't upload or see it.)

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15 Points Brainiest if right 1 Heart 5 Stars Please help What is the initial value of the function represented by this graph A coordinate grid is shown with x a class=