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-the most common and most serious complication. According to the National Health Service (NHS), UK, an estimated 9% to 34% of rheumatic fever cases have this complication. Rheumatic heart disease means permanent damage to the heart caused by the inflammation of rheumatic fever.The most common complication occurs with the mitral valve-the valve between the two left chambers of the heart.trep throat, and less commonly scarlet fever are infections caused by Group A streptococcus infections. Group A streptococcus skin infections, as well as infections in other parts of the body may lead to rheumatic fever (much less common).