Know if an ordered pair is a solution to a system of linear equations in two variables or not. Solve a system of linear equations in two variables by graphing. Solve a system of linear equations in two variables by the substitution method. Solve a system of linear equations in two variables by the elimination method. In this tutorial we will be specifically looking at systems that have two equations and two unknowns. Tutorial 20: Solving Systems of Linear Equations in Three Variables will cover systems that have three equations and three unknowns.
Medical Definition of rheumatic. : of, relating to, characteristic of, or affected with rheumatism rheumatic pain a rheumatic joint.
Rheumatic heart disease is a condition in which permanent damage to heart valves is caused by rheumatic fever. The heart valve is damaged by a process that generally begins with an infection caused by streptococcus bacteria. In some cases, strep throat or scarlet fever can eventually progress to rheumatic fever.ince rheumatic fever is the cause of rheumatic heart disease, the best treatment is to prevent rheumatic fever from occurring. Penicillin and other antibiotics can usually treat strep throat (a streptococcus A bacterial infection) and stop acute rheumatic fever from developing.