state whether the lines are parallel, perpendicular, or neither. show your work. 10x–5y=100 and 6y+3x=−7

If (a, b) is the solution to the system of equations shown above, and a and b are integers, then what is the value of a+b?

The different forms of a gene for a given trait are called .

Which scenario describes intraspecific, indirect competition? a. a peacock defends its territory against another peacock. b. lions and hyenas compete for the same prey animals. c. a male black bear eats fish in an area of a lake, so other black bears can’t. d. different species of birds fight over spilled popcorn on the ground.