What is the sign of 3xy when x>0 and y<0?

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What is the sign of 3xy when x>0 and y<0?

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Aaliyah 6 days 2021-09-10T10:44:48+00:00 1 Answer 0

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    2021-09-10T10:46:22+00:00

    Let see.

    Numbers which are bigger than 0 are defined as positive numbers and have a prefix of + (plus).

    Numbers which are smaller than 0 are defined as negative numbers and have a prefix of – (minus).

    Let say number a is equal to the expression,

    a=3xy

    Since y is negative we can change its prefix to -,

    a=3x\cdot(-y)

    Any number (in this case 3x) multiplied by negative number will produce a negative number.

    Therefore the sign or prefix of number a will be -.

    Hope this helps.

    r3t40

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