Topic 2 Vocabulary

perpendicular

• where the graph crosses the x-axis

• an equation whose graph is a straight line

• lines that form right angles and have opposite reciprocal slopes

• lines that never intersect and have the same slopes

parallel

• the steepness of a line

• lines that form right angles and have opposite reciprocal slopes

• the vertical axis on a coordinate plane

• lines that never intersect and have the same slopes

reciprocal

• a number that can be multiplied by another number to make 1 (fraction flipped)

• the difference in y-values of two points on a line

• where the line crosses the y-axis

• the horizontal axis on a coordinate plane

standard form

• m= y2 - y1/x2 - x1

• Ax + By = C

• y - y1 = m(x - x1)

• y = mx + b

point-slope form

• Ax + By = C

• y = mx + b

• m = y2 - y1/x2 - x1

• y - y1 = m(x - x1)

slope-intercept form

• y - y1 = m(x - x1)

• Ax + By = C

• m = y2 - y1/x2 - x1

• y = mx + b

run

• the difference in y-values of two points on a line

• where the graph crosses the x-axis

• the difference in x-values of two points on a line

• the steepness of a line

rise

• where the line crosses the y-axis

• the difference in the x-values of two points on a line

• (0, 0)

• the difference in the y-values of two points on a line

slope

• steepness of a line, rise/run

• where the graph crosses the x-axis

• the horizontal axis on a coordinate plane

• lines in the same plane that never intersect

x-intercept

• a pair of numbers that give the location of a point

• where the line crosses the y-axis

• (0, 0)

• where the line crosses the x-axis