Unit 4 Test Review

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never intersect and have the same slope.

Front

What does it mean for lines to have the same slope?

Back

Lines with the same slope rise and run at the same rate, meaning they are parallel.

Front

What is a system of linear inequalities?

Back

A system of linear inequalities consists of two or more inequalities that together define a region on a graph.

Front

How do you determine if two lines are parallel from their equations?

Back

Two lines are parallel if their slopes are equal.

Front

What is the solution to a system of equations?

Back

The solution to a system of equations is the point where the lines intersect, representing the values of the variables that satisfy all equations.

Front

How can you graph a linear inequality?

Back

To graph a linear inequality, first graph the corresponding equation as a line, then shade the region that satisfies the inequality.

Front

What does the symbol '≤' mean in an inequality?

Back

The symbol '≤' means 'less than or equal to', indicating that the values can be equal to the boundary line.

Front

What does the symbol '>' mean in an inequality?

Back

The symbol '>' means 'greater than', indicating that the values must be above the boundary line.

Front

How do you solve a system of equations by graphing?

Back

To solve by graphing, plot both equations on the same graph and identify the point of intersection.

Front

What is the significance of the y-intercept in a linear equation?

Back

The y-intercept is the point where the line crosses the y-axis, indicating the value of y when x is zero.