Which product is negative? −2⋅(−7)⋅12⋅(4) −6⋅(−7)⋅(−8)⋅0 −3⋅(−2)⋅(−4)⋅(−7) 4⋅(−9)⋅(−3)⋅(−1)

4⋅(−9)⋅(−3)⋅(−1) product is negative,

Step-by-step explanation:

Given  : Numbers .

To find : Which product is negative.

Solution : We have given expression with positive sign and negative sign.

By the integer rule : When we multiplied the even number of negative it become positive .

Example: -a * - b = ab.

When we multiplied the odd number of negative it become negative  .

Example: -a * - b* -c = - abc.

This expression have −6⋅(−7)⋅(−8)⋅0 have 3 negative sign but it has 0 so, this expression would be zero.

Then only this 4⋅(−9)⋅(−3)⋅(−1) expression have 3 negative sign

So, its product would be negative.

Therefore, 4⋅(−9)⋅(−3)⋅(−1) product is negative,

b.an increase in a causes b to decrease

this is not the answer this is just a question. is this middle school math?

step-by-step explanation: