Explore the Properties of a Straight Line Graph
Move the m and b slider bars to explore the properties of a straight line graph. See:
- The effect of changes in m
 - The effect of changes in b
 - The effect of a negative value of m
 - The effect of a negative value of b
 - How to create a horizontal line
 
 ../algebra/images/graph-straight-line.js
Read more about the Equation of a Straight Line
Find the Equation from 2 Points
Now see how two points can change the line equation. Try to make:
- y = x
 - y = x + 2
 - y = −2x + 8
 - y = 4
 - x = 4
 
 ../geometry/images/geom-line-equn.js?mode=equn