Today, Philip discussed different forms of symbiosis including mutualism, commensalism, parasitism, as well as predation and competition. He identified which organism(s) are helped or harmed by each relationship.
9-7 Solving Systems of Linear and Quadratic Equations – We learned to describe a linear-quadratic system of equations and solve this system of equations by graphing, elimination, or substitution. For any system of two equations in two variables the solution consists of the ordered pairs that satisfy both equations.