# Writing the Equation of a Line

# 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