1. Distance On a coordinate plane Finding the length of a line segment.
On a number line
On a coordinate plane

2. Distance On a number line formula: d = | x2 – x1 |
On a coordinate plane
formula:

3. Midpoint On a coordinate plane
Finding the location of the midpoint of a line segment.
On a number line
On a coordinate
plane
Remember…
A midpoint is a location of the midpoint.

4. Midpoint
On a number line
formula:
On a coordinate plane
formula:

5. Slope Slope is the steepness of a line.
It is represented by rise over run.
Formula -

6. Special Slopes Horizontal lines Slope = zero Vertical lines
Slope = undefined
Parallel lines
Slopes are the same.
Intersecting lines
Slopes are different and not perpendicular.
Perpendicular lines
Slopes are the negative reciprocal of each other.

7. y = mx + b Slope-intercept Form y-intercept
Plot a point on the y-axis using the y-intercept value.

8. y-y1 = m(x-x1) (x1,y1) and slope Point – Slope Form
Plot a point by using the given point and the slope calculated

9. Application Parallelograms Trapezoids Circles
Finding endpoint of a segment
Graphing linear equations
Parallel & perpendicular slopes/lines
x and y-intercept

10. Homework 10/26/2010 Read pg 196-199 Do problems pg 200-201
1,4,7,10,11,12,31,41,42 extra credit 54