Graphing Systems of Linear Equations

Front

What is a system of linear equations?

Back

A set of two or more linear equations with the same variables.

Front

What does it mean to solve a system of linear equations by graphing?

Back

It means to find the point(s) where the graphs of the equations intersect.

Front

What is the solution to a system of linear equations?

Back

The point(s) where the equations intersect, representing the values of the variables that satisfy all equations.

Front

What does it mean if two lines are parallel when graphing a system of linear equations?

Back

It means there is no solution to the system, as the lines never intersect.

Front

What does it mean if two lines coincide when graphing a system of linear equations?

Back

It means there are infinitely many solutions, as the lines are the same.

Front

How can you determine the number of solutions in a system of linear equations?

Back

By analyzing the slopes and y-intercepts of the lines: parallel lines have no solutions, coincident lines have infinite solutions, and intersecting lines have one solution.

Front

What is the slope of a line?

Back

The slope is a measure of the steepness of a line, calculated as the rise over run (change in y over change in x).

Front

What is the y-intercept of a line?

Back

The y-intercept is the point where the line crosses the y-axis, represented as (0, b) in the equation y = mx + b.

Front

How do you graph a linear equation?

Back

1. Identify the slope and y-intercept. 2. Plot the y-intercept on the graph. 3. Use the slope to find another point. 4. Draw the line through the points.

Front

What is the significance of the point (3, 3) in a system of linear equations?

Back

It is a solution to the system, meaning it satisfies all equations in the system.