Answer:
-9,-4
Step-by-step explanation:
Let the coordinates of Jedd's house be (a,b).
This is called internal ratio division.
-3=[a+3(-1)]/4.
a-3=-12
a=-12+3
a=-9
Also, 2=[b+3(4)]/4
b+12=8
b=-4
Coordinates are (a,b)=(-9,-4)
Alternatively, from Holli's x coordinate (-1) to the Fast food's x coordinate(-2), is a difference of -2 for a ratio coefficient of 1. Then for a ratio coefficient of 3, the first plus (-2) gives -5, another -2 step will be -7, and third step will be -9. Note that ratio is 1:3.
The y coordinate of Holli's house is 4. It moved down to 2 at the fast food. This gives a difference of -2. If ratio is 1:3, then 3×-2=-6. From fast food, y coordinate of Jedd's house will be at -6+2=-4.
Hence, Jedd's house is at (-9,-4)
