High school geometry
A translation acting on the coordinate plane takes the point (-169,434) to point (-203, -68). What are the coordinates of the image of point (31, -529) under this translation?. Created by Sal Khan.
Want to join the conversation?
- do you just subtract everything or are you supposed to add and then subtract(2 votes)
- I can not understand it:
This is my thinking:31-(-34)=31+34=65
The number 34 and 502 are negitive,right?(2 votes)
- The -34 and -502 are the rules for the translation. Whatever pint you're translating, you add -34 to the x-coordinate and -502 to the y-coordinate. Subtracting instead of adding would give you the opposite effect, and translate the point up and to the right instead of down and to the left.(4 votes)
- why cant you use the blue coordinates first? (subtract the magenta from the blue)(1 vote)
- I totally understand this whole procedure. I can do it with the numbers given without looking at Sal's video. My problem is the problem they give after this to solve on our own. I have done it 15 times using the same procedure but I can not get it right. And there is no solution shown for it which I really do not understand. Can someone point out what I am not seeing. Thank You.(1 vote)
- I'm not sure what you're doing wrong, but if you were to use the exact same procedure as Sal, you should get the right answer. Make sure you don't forget to add the amount you are translating to your original point. If you are still having trouble, I suggest looking at the hints in the problem to see what you are doing wrong. Feel free to give me an example problem and your "workout" so that I can see where you go wrong.(2 votes)
- Context of the question has me lost. But to move on I'll apply this definition to find solution to every encounter(2 votes)
- wow last question was 4 months ago. is that right?(1 vote)
- Yes, it's right. All of Khan Academy math gets only a few new questions a day. So the chances of this particular video having a recent question are slim.(2 votes)
- So , are we doing a double translation? can anyone explain this for me?(1 vote)
- double translation is basically the same thing and a little bit more difficult but yes your right.
hope that helped(2 votes)