Final answer:
The location of G is -1.95. The length of FG is 3.15.
Step-by-step explanation:
In this question, we are given that point F is at 1.2 on a number line and point H lies on segment FG at 3.15, which is the length of FG from point G. We need to find the location of G and the length of FG.
Since point H is the length of FG from point G, we can subtract 3.15 from 1.2 to find the distance between G and H. Hence, the location of G is 1.2 - 3.15 = -1.95.
The length of FG is the distance between F and G, which is obtained by subtracting the location of G from the location of F. Therefore, the length of FG is 1.2 - (-1.95) = 3.15.