For this question, Greg says that when the two lines meet, the intersection point is at (2,2). How does he know for certain that that is the intersection point?
All help would be appreciated. Thank you.
Try sketching the problem. Also you can find the equation of the line passing through (1, 3) and (2, 2).
I got to the point where I found the slope of the line passing through those points and also the slope of the perpendicular line. What’s next?
Sketch the problem. Can you find out what is that area you need to find?
I got the hypotenuse of the triangle which is 4. And I need to know the intersection point to find the base and height of the triangle. I wasnt sure how to find the intersection point though.
- Find the equation of the line passing through (1, 3) and (2, 2)
- You know the slope of the line passing through the origin
- Use that to find the equation of the line passing through the origin (you know a point passing through the line, and its slope)
- Finally, you have a pair of simultaneous equations. Solve to find the intersection point.