Question

Please help my brother understand this. I can't explain it to him, because he just doesn't understand. I was hoping you guys could help
http://prntscr.com/4tnag2

Answer 1

can you jest type it when i try to loge that link it dose not work

Answer 2

Hey sammi's bro c:

For the first transformation, try to realize that the x, y have nothing to do with the X, Y vertices of the triangle.

We're just making changes to the coodinates of each vertex.

Answer 3

\(\Large\rm X(5,3)\qquad\qquad X'(5-5,3+2)\)
Understand how that works? :o
You're subtracting 5 from the first coordinate value, and adding 2 to the other one.
\(\Large\rm X'(0,5)\)

Answer 4

For the first transformation, you could check the other ones just to make sure, but it looks like it's going to be option B, yes?

So that's what you would write in the empty box to the left of the rule. B

Answer 5

Reflection across x-axis: (a, b) becomes (a, -b)

Reflection across y-axis: (a, b) becomes (-a, b)

Answer 6

Dilation by a factor of 'k' with origin as the center of dilation: (a, b) becomes (ka, kb).

Answer 7

So
1-B
2-A
3-C
4-D
(This is what he says and I agree)

Answer 8

Looks good.

Answer 9

Thanks

Answer 10

1-B 2-A 3-C 4-D