Algebra ISection 4-3

Point-Slope Form

Point - Slope Form

y - y1 = m (x - x1)

m = slope

( x1, y1) -- ordered pair

Write an equation in point-slope form of the line that passes through the given point with the given slope.

1. (- 1, 4) m = - 2

Write an equation in point-slope form of the line that passes through the given point with the given slope.

2. (3, - 8) m = ⅔

Write an equation in point-slope form of the line that passes through the given point with the given slope.

3. (4, 7) m = ¾

Write an equation in point-slope form of the line that passes through the given point with the given slope.

4. (5, - 3) m = - 1

Write the equation in point-slope form of the line shown.

Steps:

1st - find the slopeformula or count

2nd – use the first ordered pairs

Write the equation in point-slope form of the line shown.

5.

Write the equation in point-slope form of the line shown.

6.

Write the equation in point-slope form of the line shown.

7.

Write the equation in point-slope form of the line shown.

8.

3 forms of lines:

1) Standard Form

2) Slope-Intercept Form

3) Point-Slope Form

Homework:

Worksheet 4-3