Writing the Equation of a Line
by Chris Courteau
1. From a graph
1.1. Find where the grpah hits the Y axis
1.2. Calculate the rate of change(slope)
1.3. Put it altogether
2. From two points
2.1. First find slope
2.2. Find the Y intercept
2.3. Write the equation in slope intercept form
3. From a point and slope
3.1. Use the equation to find the y-intercept
3.2. Put the slope and intercept into the equation
4. Equations are written in slope-intercept form
5. Slope is known as the rate of change. It is the change in the independent variable over the dependent variable
6. The Y-intercept is also known as the initial condition