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goblinko [34]
3 years ago
12

Explain why 3x – y is the same as -y + 3.1.

Mathematics
1 answer:
asambeis [7]3 years ago
3 0

Answer:

The commutative property

Step-by-step explanation:

The commutative property of addition states that a+b=b+a ( i.e you can move things around without changing the sum)

example:

3x-y=3x+(-y)=(-y)+3=-y+3x

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Given inequality is:

4x+8y\leq-8

Now for (6,-4), Put x=6 nd y=-4 in given inequality:

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\begin{gathered} 4(-2)+8(-3)\leq-8 \\ -8-24\leq-8 \\ -32\leq-8 \end{gathered}

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simillarly you can check for other options also.

For (-7,5) Put x=-7 and y=5 in given inequality:

\begin{gathered} 4(-7)+8(5)\leq-8 \\ -28+40\leq-8 \\ 12\leq-8 \end{gathered}

As 12 is grater than -8 so this condition is false.

And for (-6,0) put x=-6 and y=0 in given inequality:

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