1. true.
2. false.
3. false.
4. true.
these should be correct.
You answer would be Oy= 7x-1. I hope this helps!
Electromagnets are devices that create a magnetic field through the application of electricity. Strong electromagnets are used to lift, move and drop heavy objects, such as vehicles. Electromagnets have advantages over permanent magnets. When the current is switched off, the electromagnet will lose its magnetism. The car will fall back to earth and we need that when we move cars in a junkyard. With a regular ( permanent ) magnet it would be much harder to do.
Answer: A. True
Answer:
no because
Step-by-step explanation:
the results were not tested enough
