# Slope Vocabulary

 The flashcards below were created by user chawkins32 on FreezingBlue Flashcards. Horizontal line zero slope 0/run Vertical line undefined slope rise/0 Slope rise/run the measure of the steepness of a line Point-Slope Form y - y1 = m(x - x1) m is the slope of the line (x1,y1) are the coordinates of the point the line goes through Slope-Intercept Form y = mx + b m is the slope of the line b is the y-intercept Standard Form of a Linear Equations Ax + By = C Slope is not given by this form directly. You must solve the equation for y =, then m = -A/B. Slope Formula y2 - y1 = mx2 - x1 This is the formula to find the slope of a line given two points. Parallel lines Parallel lines are two lines that never intersect. Their slopes are equal. Perpendicular Lines Perpendicular lines are two lines that intersect at right angles. Their slopes are opposite reciprocals of each other. The product of their slopes equals -1. What is the slope of y = -3x + 4? m = -3 What is the slope of x = 5? Undefined slope The line is vertical. What is the slope of a line parallel to y = 2x - 7? m = 2 The slopes are the same. What is the slope of 4x + 3y = 12? m = -4/3 The equation is y = -4/3 x + 4 What is the slope of y = -11? zero The line is horizontal. What is the slope of a line with the equation: y + 4 = 0.5(x + 3)? m = 0.5 The line goes through (-3, -4). What is the slope of a line perpendicular to 4x - 3y = 15? The slope of this line is 4/3, so the perpendicular slope is the opposite reciprocal: -3/4. What is the slope of a line through (-2, 4) and (0, -3)? -3 - 4 = -7 = m0 - -2 2 Authorchawkins32 ID71324 Card SetSlope Vocabulary DescriptionHow slope is related to each term. Updated2011-03-07T20:25:00Z Show Answers