Which statement is true for the set of natural numbers?

1 answer:

5 0

It's closed under addition. You can take any two natural numbers you want, add them up and you'll get some other natural number (eg: 3 and 5 ---> 3+5 = 8)

it's not closed under subtraction. Sure 5-3 = 2 is a natural number but 3-5 = -2 is not a natural number

so that leads us to the answer being choice B

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What is the system of inequalities associated with the following graph?

slamgirl [31]

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And the inequality should be $y\geq -3x-3$

Or $3x +y \geq -3$

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So the y intercept is b=2

and the slope is $m= \frac{2-3}{0-(-2)} = \frac{-1}{2}$

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