Dynamic Activity

Point-Slope Form of a Line

Lesson Vocabulary

• point-slope form

Take Note Key Concept: Point-Slope Form of a Linear Equation

Definition

The point-slope form of an equation of a nonvertical line with slope m and through point ( x 1 , y 1 ) open , x sub 1 , comma , y sub 1 , close  is y − y 1 = m ( x − x 1 ) . y minus , y sub 1 , equals m open x minus , x sub 1 , close .

Symbols

slope ↓ y − y 1 = m ( x − x 1 ) ↑ ↑ y -coordinate  x -coordinate table with 5 rows and 1 column , row1 column 1 , slope , row2 column 1 , downwards arrow , row3 column 1 , y minus , y sub 1 , equals m open x minus , x sub 1 , close , row4 column 1 , upwards arrow upwards arrow , row5 column 1 , y . minuscoordinate . x . minuscoordinate , end table

Graph

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