MATHH THAT I NEED HELP WITH TF .

Question

You move down 3 units and right 3 units. You end at (2, -3). Where did you start?

Answer 1

Hello Coco,

The destination is at (2,-3), so the final x-coordinate is 2 and the final y-coordinate is -3.

A couple things:

1. Movement along the x-axis can be either LEFT (negative) or RIGHT (positive)
2. Movement along the y-axis can be either UP (positive) or DOWN (negative)

Let's start with the movement along the x-axis. You're told that you move RIGHT 3 units to end up at 2. That means that wherever you started, ADD 3 to it and you get 2. So:

x + 3 = 2

x = 2 - 3 = -1 which means that you started with an x-coordinate of -1

Now, let's look at the movement along the y-axis: you're told that you move DOWN 3 units to end up at -3. That means that wherever you started, SUBTRACT 3 from it and you get -3. So:

y - 3 = -3

y = -3 + 3 = 0. which means that you started with a y-coordinate of 0

So you started at (-1,0)