Algebra 1 Systems Review

Front

What is a system of equations?

Back

A set of two or more equations with the same variables that are solved together.

Front

What are the three main methods to solve systems of equations?

Back

1. Substitution 2. Elimination 3. Graphing

Front

What does the elimination method involve?

Back

Adding or subtracting equations to eliminate one variable, making it easier to solve for the other.

Front

What is the substitution method?

Back

Solving one equation for one variable and substituting that expression into the other equation.

Front

What does it mean if two equations are inconsistent?

Back

There is no solution; the lines represented by the equations are parallel.

Front

What does it mean if two equations are dependent?

Back

There are infinitely many solutions; the equations represent the same line.

Front

What is the correlation coefficient?

Back

A statistical measure (denoted as 'r') that describes the strength and direction of a relationship between two variables.

Front

How do you interpret a positive correlation?

Back

As one variable increases, the other variable also increases.

Front

How do you interpret a negative correlation?

Back

As one variable increases, the other variable decreases.

Front

What is the graphical representation of a system of equations?

Back

The point(s) where the lines intersect represent the solution(s) to the system.