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Introduction to increasing, decreasing, positive or negative intervals | Algebra I | Khan Academy

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Find the domain

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Minimum/maximum points- You state the highest and lowest points on a graph using the y-values of the point
Intervals- You fine the line segments on a graph that are either increasing on decreasing (depending on what the question is asking) and then write th first x-values of that line and the last. You use parenthesis
Domain- You write the x-value of where the line starts and of where the line ends. You use brakets unless there is infinity involved or an open dot.
Range- You write the lowest y-value and the highest y-value on the line. You use brakets unless there is infinity involved or an open dot.

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The y-values

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The x-values

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Where the line is decreasing

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Where the line is increasing