Answer:

Step-by-step explanation:

Hope this helps!
(-1.5,3) Y=3 which is up 3 and a horizontal line and 2x+y=0 can be written as y=-2x so in order to get -1.5 you have to make y=3 cause y=3 and when you do that it should look like 3/-2=-2/-2x so x=-1.5
So you will use slope formula which is m = (y2 -- y1) / (x2 -- x1)
-1 minus -7=6
13 minus -8=21
Remember it changes to a positive Keep,Change,Change
So its 6/21
Or 1/4
Ask questions if you still need help
:)
The coordinates would be multiplied by 3, as the scale factor is 3, and it is a dilation, so we know the size increases.
Answer: i've heard about it but i'm not too much into it