Question

EG=6.7, F, C, equals, 4FC=4, and G, D, equals, 3, point, 3GD=3.3. Find the length of start overline, E, F, end overline
EF
. Round your answer to the nearest tenth if necessary.
C
D
E
G
F

EF = what

Answer 1

I can solve this, but I need one piece of missing information: the order of the five collinear points (which is left-to-right or top-to-bottom on your diagram). Right now you wrote the letters C, D, E, G, F but that could be just a list — the answer depends on the order along the line.

A quick check of consistency:
- If the order is C–D–E–G–F (C leftmost, F rightmost) then GD = distance(G,D) = (G−E)+(E−D) = EG + ED, so GD would be larger than EG. But you gave EG = 6.7 and GD = 3.3, which contradicts that order.
- If the order is G–D–E (so D is between G and E) then DE = GE − GD = 6.7 − 3.3 = 3.4. That is consistent, but EF still cannot be determined from EG, GD and FC alone without knowing where C and F lie relative to the others.

Please tell me the left-to-right (or top-to-bottom) order of the points on the line (for example: C, D, E, G, F or F, G, D, E, C, etc.), or attach the diagram. Once I have that I’ll compute EF and round to the nearest tenth.