00:01
In this question, i've given this triangle abc.
00:04
You'll be reflected through a line passing the point p and the y intercept of minus 2.
00:12
And then it will be translated by 3 -3 that is moving to the right on the x axis by 3 and moving upwards on the y axis by 3.
00:28
So the new triangle will be a, b, b, c -prime, and we want to find their coordinates.
00:35
So before i draw a line passing through p and y a set of minus 2, i need to know how to draw this line accurately.
00:47
So the gradient of the line passing through p, taking note that this point here is 0 minus 2 and p is 10 .8.
01:01
So the gradient will be y2 minus y1 over x2 minus x1.
01:15
Gradient of 1.
01:16
So the line equation is y equals to 1x or just x minus 2 minus 2 is the y in the set.
01:25
Now when y equals to 0 my x is 2 so this is the point.
01:35
So now i can see it's quite easy to draw the line is every set of four boxes.
01:48
Okay now i want to reflect the easiest point to reflect is c and b.
01:54
So for c i'm just going to draw like a 90 degree line so it will be here...