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The range of a function when you consider a graph is how high and how low it goes. A quadratic function is usually an arch that goes up to a high point and then back down like the arch of a kicked ball.

Or, it can be the reverse which goes down and then up in a mirror image of a kicked ball.

The range is what y values would be needed to show ALL the graph.

Example;

y=x^2+5x-6

The graph crosses the x axis at -5 and 1 it goes down then back up.

The range is from infinity down to -49/4

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Q: What is the range of quadratic function?
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