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Genrish500 [490]
3 years ago
6

Explain why you can use a test point to determine which region or regions of the graph of an inequality should be shaded.

Mathematics
2 answers:
LenKa [72]3 years ago
5 0
A curve divides a plane into two areas, one satisfying the inequality (shaded) and one that does not (unshaded). So we can pick a point on either side (not on the curve itself) and substitute its x- and y-coordinates into the inequality. If the substituted values make the inequality true, then that point is in the shaded area. Otherwise, that point is in the unshaded area.
r-ruslan [8.4K]3 years ago
3 0
<h2>Answer with explanation:</h2>

We should use a test point to determine the region or regions of the graph of an inequality should be shaded because by plotting an inequality the graph is divided into two regions : one which lie in feasible region and the other does not .

Now in order to check the feasible region we start by taking a test point and see whether it makes the inequality true or not.

  • If it does not makes the inequality true then that region is not shaded and other is shaded.
  • If it satisfy the inequality then the region containing that point is shaded.
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He performed better in the 800 m race

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Obtain the standardized score for each event :

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Zscore = (4.1 - 4.5) / 0.75

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800 meter :

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Zscore = (3 - 3.2) / 0.4

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