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The Discriminant - Problem 4 298 views

There are a few key features to look for when matching a quadratic function with its graph: whether "a," the leading coefficient, is positive or negative to open up or down; the y intercept that is found when x = 0; and the focus of this lesson, which is how many x-intercepts you can expect. The discriminant, which is the value of "b squared minus 4ac," tells us if we can expect zero, one, or two x-intercepts.

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