Step by step
The question
Question: translate the shape A(1, 1), B(4, 1), C(4, 3) and D(1, 3) left 2, down 5.
1 Draw the shape
Put the points on the grid and join them.
2 Read the move
Left 2 means x gets 2 smaller: x − 2.
Down 5 means y gets 5 smaller: y − 5.
So every point (x, y) goes to (x − 2, y − 5).
3 Move each point
Start at A.
Go left 2.
Then go down 5.
We land on the new point.
We call the new point A prime.
The little mark means: the new A.
A is (1, 1).
Left 2: 1 minus 2 is −1.
Down 5: 1 minus 5 is −4.
So A' is (−1, −4).
Careful!
Down makes y smaller.
So we take 5 away.
We do not add it.
Now B: 4 minus 2 is 2.
1 minus 5 is −4.
So B' is (2, −4).
Now C: 4 minus 2 is 2.
3 minus 5 is −2.
So C' is (2, −2).
Now D: 1 minus 2 is −1.
3 minus 5 is −2.
So D' is (−1, −2).
4 Draw the image
Join the new points.
This new shape is called the image.
So the image is A'(−1, −4), B'(2, −4), C'(2, −2) and D'(−1, −2).
5 Check
Let's check.
Draw an arrow from each point to its new point.
All the arrows are the same: the same length, the same way.
So the shape slid, without turning.
Right!
Let's look back.
First: draw the shape.
Then: read the move.
Then: move each point.
Then: draw the image.
Last: check.