Parallel and Perpendicular Slopes
Compare the slopes of AB and EF when the lines are parallel. Move around the x points to see multiple examples.
Question:
What do you notice about the slopes of AB and CD when the lines are parallel?
Compare the slopes of AB and EF when the lines are perpendicular. Move around the x points to see multiple examples.
Question:
What do you notice about the slopes of AB and CD when the lines are perpendicular?
Discussion
Did you get any ? to appear when you were messing around with these 2 different graphs?
Discuss with your neighbors what vocabulary term that we have covered in class could better represent the question mark?
Graphing Point Slope Form: Correctly answer 5 before moving on. Move around the large point and then use the sliders to adjust the slope.
Reminder
point slope form: y-y1=m(x-x2)
slope intercept form: y=mx+b
Write the equation of the line. Correctly answer 5 before moving on.
Help for struggling to write equation.
What is the equation of the line in slope intercept form that is perpendicular to AB and passes through Point C?
Final Question:
What is the equation of the line in slope intercept form that is perpendicular to AB and passes through Point C?