What is the distance formula between two points (x₁, y₁) and (x₂, y₂)?
Hint: It comes from the Pythagorean Theorem
What is the midpoint formula?
What is the slope formula?
What is the slope-intercept form of a line?
What is the point-slope form of a line?
What is the relationship between slopes of perpendicular lines?
What is the relationship between slopes of parallel lines?
What is the standard form of a linear equation?
What is the slope of a vertical line?
Hint: The slope formula would require dividing by a run of zero
What is the slope of a horizontal line?
How can the distance formula be used to write the equation of a circle in a coordinate proof?
In a coordinate proof, how can you show that a quadrilateral is a parallelogram?
Hint: Parallel sides mean matching slopes