True or false parasitism is a symbiotic relationship that involves a predator and a prey

False

Explanation:

Parasitism is a biological association where two organisms interact and one of the two benefits while the other is harmed.

Example is humans and mosquito. Female Anopheles mosquitoes derives nutrients from the blood of humans whenever they feed, and at the same time transmit malaria causing pathogen (plasmodium falciparum) that weakens and cause disease to humans.

Thus, parasitism does not involve predator and prey

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

b.