Unit 4 Test Review - Linear Equations

Front

What is the slope-intercept form of a linear equation?

Back

y = mx + b, where m is the slope and b is the y-intercept.

Front

What do the variables m and b represent in the slope-intercept form?

Back

m represents the slope of the line, and b represents the y-intercept.

Front

How do you find the slope of a line given two points (x₁, y₁) and (x₂, y₂)?

Back

Use the formula m = (y₂ - y₁) / (x₂ - x₁).

Front

What is the slope of a line that is horizontal?

Back

The slope of a horizontal line is 0.

Front

What is the slope of a line that is vertical?

Back

The slope of a vertical line is undefined.

Front

What are the slopes of two perpendicular lines?

Back

The slopes of two perpendicular lines are opposite reciprocals.

Front

If the slope of a line is -5/4, what is the slope of a line perpendicular to it?

Back

The slope of the perpendicular line is 4/5.

Front

What is the y-intercept of the line represented by the equation y = (-3/2)x + 4?

Back

The y-intercept is 4.

Front

How can you determine if two lines are parallel?

Back

Two lines are parallel if they have the same slope.

Front

What is the general form of a linear equation?

Back

The general form is ax + by = c, where a, b, and c are constants.