To convert yards to meters, we first need to use the conversion factor that 1 yard is equal to 0.9144 meters.
Jordan measured the distance as 8 yards. To convert this to meters, we can multiply the number of yards by the conversion factor:
\[ \text{Meters} = \text{Yards} \times 0.9144 \]
Substituting in the value:
\[ \text{Meters} = 8 \times 0.9144 = 7.3152 \]
Now, rounding 7.3152 to the nearest tenth gives us 7.3.
Thus, the catapult threw the rock 7.3 meters.