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AveGali [126]
3 years ago
12

Which is the graph of y = [x] - 2?

Mathematics
2 answers:
Feliz [49]3 years ago
6 0
<h3>Answer: Top row, third option (far right)</h3>

Explanation:

The notation \lfloor x \rfloor means "floor of x". Whatever decimal value x is, we just ignore the decimal portion and just focus on the integer part. We round down to the nearest whole number. We always round down.

For something like x = 2.5 or x = 2.7, the value of \lfloor x \rfloor will be 2. It doesn't matter that 2.7 is closer to 3 than it is to 2. The interval 2 \le x < 3 will be entirely on the x axis since we are taking the result of the flooring operation and subtracting off 2. Notice how x = 3 is not included. This is because x = 3 leads to y = 1 instead of y = 0. So we have an open hole at the end of the interval. The same goes for any other piece as well.

Dmitrij [34]3 years ago
4 0

Answer:

The <u><em>Third option [ far right]</em></u>

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Charlize and Camille solved the equation 4x – 2y = 8 for y. Their work is shown
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Answer:

The answer to your question is below

Step-by-step explanation:

Equation 4x - 2y = 8 solve for y

First, pass 4x to the right side                -2y = -4x + 8

Pass -2 to the right side                             y = -4/-2 x  + 8 /-2

Simplify                                                        y = 2x -4 or    y = -4 + 2x

I can not see clearly the work of Charlize and Camille, but the one that has the answer shown above is correct.                                                                                    

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