Graphing Linear Equations (KD) Test Review

Front

What is the x-intercept of a line?

Back

The x-intercept is the point where the line crosses the x-axis, meaning y = 0.

Front

What is the y-intercept of a line?

Back

The y-intercept is the point where the line crosses the y-axis, meaning x = 0.

Front

How do you find the x-intercept from an equation?

Back

Set y = 0 in the equation and solve for x.

Front

How do you find the y-intercept from an equation?

Back

Set x = 0 in the equation and solve for y.

Front

What is the slope of a line?

Back

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

Front

What does the equation y = mx + b represent?

Back

This is the slope-intercept form of a linear equation, where m is the slope and b is the y-intercept.

Front

What is the significance of the slope in a linear equation?

Back

The slope indicates the direction and steepness of the line; a positive slope means the line rises, while a negative slope means it falls.

Front

What does a slope of 0 indicate?

Back

A slope of 0 indicates a horizontal line, meaning there is no change in y as x changes.

Front

What does an undefined slope indicate?

Back

An undefined slope indicates a vertical line, meaning x is constant and does not change.

Front

How can you determine if two lines are parallel?

Back

Two lines are parallel if they have the same slope but different y-intercepts.