A. negative because when one multiplies a even number of negatives, the product is a positive; but when one multiplies an odd number of negatives the product is negative.
The answer is True,2 planes can intersect at a point.
Answer:
I do know that y = 3 and that x = -2, so any system that has that solution is correct.
Step-by-step explanation:
Multiplying the second equation by -2 and adding the equations will cancel out the x variable. The remaining equation is:
10y = 30. Therefore, y must be 3. Substituting y in for the first equation, we get:
6x + 6 = -6. That means x must be -2. I checked my work with the second equation:
-6 - 12 = -18.
The system results in a true statement, so the answer is y = 3 and x = -2.
Im sorry do not now i will try and help
