Question

What is the sign of 3x y3xy3, x, y when x>0x>0x, is greater than, 0 and y<0y<0y, is less than, 0?

Choose 1 answer:

Choose 1 answer:


(Choice A)

A

Positive


(Choice B)

B

Negative


(Choice C)

C

Zero

Answer 1

B ) Negative

Explanation:

Given the expression 3xy

when x>0 and y<0

The value of the expression 3xy will be negative.

This is because the product of a positive and negative number will always be negative.

For illustration,

Let x=5>0 and y=-5<0

3xy=3(5)(-5)=-75

NOTE:

`-X-=+\\-X+=-\\+X+=+`