A line with slope of
that passes through the point .
A line with a slope of
is horizontal, so all points have the same -coordinate.
for in the equation below. Then substitute the -coordinate from the given point in for .
A line that passes through the points
What is the rise from the first point to the second? What is the run? Divide the rise by the run and you will have the slope.
Substitute the slope for
in the equation below. Then substitute the - and - coordinates of one of the given points for and , respectively. Then solve for .
Complete the tables in the eTool below to find the equation of each line.
Click the link at right for the full version of the eTool: CCA 3-96 HW eTool