👉 Learn how to write the equation of a line that is perpendicular to a given line. The equation of a line is such that its ...

In this video series I show you how to determine a line that is parallel or perpendicular to another line through a point.

Now use the information you already have about finding the equation of a line and apply it to the dashed lines shown in these triangles. Remember, to find the equation of a line you need a point ...

If lines are perpendicular to each other then \({m_1} \times {m_2} = - 1\) conversely if \({m_1} \times {m_2} = - 1\) then the lines are perpendicular to each other.